Description:FIELD OF THE INVENTION

[0001] The present invention relates to a wearable shopping assistive device that adjusts to the user’s wrist size for a secure and comfortable fit and provide hands-free support for carrying shopping bags, reducing physical strain and improving convenience, while monitoring the weight of the bags to ensure they do not exceed safe carrying limits, thereby preventing discomfort or injury.

BACKGROUND OF THE INVENTION

[0002] When shopping, managing bags and handling payments become a significant challenge, especially when carrying multiple items. As shoppers move from store to store, the weight and number of bags quickly become cumbersome, leading to discomfort and sometimes even frustration. This issue is particularly evident in busy shopping centers where maneuvering through crowds with heavy bags becomes difficult. Additionally, when it's time to make payments, the need to juggle bags, take out payment methods, and interact with the cashier add to the stress. For those who shop with children or have mobility concerns, this process becomes even more complicated. Solutions such as self-checkout stations, mobile payment apps, or smart carts that carry items and process payments could greatly improve the shopping experience. Stores offering assistance with carrying bags or using personal shoppers could also help ease the burden, allowing shoppers to focus on their purchases without the distraction of managing their belongings. Ultimately, having practical support for both handling shopping bags and making payments would significantly improve convenience, reduce physical strain, and enhance the overall shopping experience, making it more enjoyable and efficient.

[0003] The traditional method of shopping typically involves physically browsing stores, selecting items, and carrying them in bags while moving from one section to another or between different stores. Shoppers often rely on plastic or paper bags, which quickly become heavy and awkward to carry, especially after purchasing multiple items. This approach is exhausting, particularly when there is a lot of walking or when the shopping trip involves buying bulky or fragile items. Furthermore, the task of managing multiple bags while navigating crowded aisles or parking lots lead to frustration and delays. At checkout, shoppers handle bags, dig through their wallets or purses for payment methods, and manage the transaction all while balancing their items. The traditional shopping experience also lacks flexibility, as customers need to carry bags themselves and are often left without any support.

[0004] US7188859B2 discloses about an invention that has a shopping bag carrier is described which is light in weight, easily portable by collapsing to a very small foot print and is simple to manufacture and use without complex mechanisms and linkages.

[0005] US20090268991A1 discloses about an invention that has an apparatus for substantially containing an article, that includes a surrounding sidewall having a first end portion and a second end portion, wherein the first end portion forms a closure, with the sidewall defining an interior between the first end portion and the second end portion, wherein the interior is operational to selectively substantially contain the article. Further, the apparatus for substantially containing an article also includes an enclosure adjacent to the second end portion, wherein operationally the surrounding sidewall can be selectably disposed within the enclosure for stowage upon removal of the article from the interior.

[0006] Conventionally, many methods are available for assisting individuals in shopping. However, the cited invention does not ensure user comfort through adjustable designs or provide hands-free support for carrying items, which significantly reduce physical strain. Also, the lack of integration with real-time product information, such as price comparisons or freshness detection, limits the user's ability to make informed decisions while shopping.

[0007] In order to overcome the aforementioned drawbacks, there exists a need in the art to develop a device that is capable of providing comfort and support while shopping. The developed device should facilitate hands-free carrying of items, reducing physical strain and improving convenience, thereby ensuring safety during use and enhance the shopping experience by providing real-time product information, including price comparisons for ease of use.

OBJECTS OF THE INVENTION

[0008] The principal object of the present invention is to overcome the disadvantages of the prior art.

[0009] An object of the present invention is to develop a device that is capable of adjusting seamlessly to the user's wrist size for a comfortable and secure fit in view of ensuring the device does not cause discomfort during use.

[0010] Another object of the present invention is to develop a device that is capable of supporting the user in carrying shopping bags by providing a hands-free solution that hang and manage the weight of bags while shopping, thus improving convenience and reducing physical strain.

[0011] Another object of the present invention is to develop a device that is capable of monitoring the weight of bags and detect overload conditions for ensuring the user is alerted if the bags exceed safe carrying limits, thereby preventing discomfort or injury.

[0012] Another object of the present invention is to develop a device that is capable of offering real-time product information that include price comparisons and vendor details, by recognizing products the user interacts with, thereby enhancing the shopping experience.

[0013] Another object of the present invention is to develop a device that is capable of assessing the freshness of food items and notify the user if a product is not fresh for helping ensure quality in purchased goods.

[0014] Another object of the present invention is to develop a device that is capable of guiding the user through the shopping complex with real-time navigation and alerts about potential damaged products for helping improve the efficiency of the shopping trip.

[0015] Yet another object of the present invention is to develop a device that is capable of incorporating energy harvesting technology that utilizes the user's movements to charge the device, thus ensuring extended usage without the need for frequent recharging.

[0016] The foregoing and other objects, features, and advantages of the present invention will become readily apparent upon further review of the following detailed description of the preferred embodiment as illustrated in the accompanying drawings.

SUMMARY OF THE INVENTION

[0017] The present invention relates to a wearable shopping assistive device capable of enhancing the shopping experience by offering real-time product details such as price comparisons, vendor information, and freshness assessments alongside providing real-time navigation within shopping complexes, alerting users to damaged products, and ensuring a more efficient and informed shopping experience.

[0018] According to an embodiment of the present invention, comprising a wearable shopping assistive device, comprising a wearable band that fits securely over the user's wrist, made up of two annular members connected by telescopic rods with hinges, allowing for adjustable movement and comfort. Motorized pop-out balls embedded in the inner surfaces of the members enable smooth gliding during expansion and retraction. An ultrasonic sensor detects the user's wrist diameter, triggering a microcontroller to adjust the band for a secure fit. The device includes hooks mounted on a circular sliding unit, which are attached to the unit by telescopic rods with hinge joint, providing a means to hang shopping bags. Each hook features an electromagnet for stowing and a weight sensor to monitor the load, sending alerts to the user if the bags exceed a safe weight limit. A tactile sensor in the hooks detects the handle hardness to alert the user if a bag handle is delicate for the weight. A pressure sensor on the band tracks wrist pressure and prompts the user to adjust the band if needed. A gyroscope detects wrist orientation and adjusts the band position to maintain comfort while preventing bag discomfort. An AI-based imaging unit, integrated with a QR code scanner, provides product information and price comparisons by recognizing items the user browses. An electronic nose detects food freshness, a microphone allows voice command control, and a holographic projection unit highlight damaged products and offer navigation within the shopping complex and a piezoelectric unit harvests energy from the user’s movements to charge the device’s battery, making it self-sustaining and efficient for prolonged use.

[0019] While the invention has been described and shown with particular reference to the preferred embodiment, it will be apparent that variations might be possible that would fall within the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:
Figure 1 illustrates an isometric view of a wearable shopping assistive device.

DETAILED DESCRIPTION OF THE INVENTION

[0021] The following description includes the preferred best mode of one embodiment of the present invention. It will be clear from this description of the invention that the invention is not limited to these illustrated embodiments but that the invention also includes a variety of modifications and embodiments thereto. Therefore, the present description should be seen as illustrative and not limiting. While the invention is susceptible to various modifications and alternative constructions, it should be understood, that there is no intention to limit the invention to the specific form disclosed, but, on the contrary, the invention is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the invention as defined in the claims.

[0022] In any embodiment described herein, the open-ended terms "comprising," "comprises,” and the like (which are synonymous with "including," "having” and "characterized by") may be replaced by the respective partially closed phrases "consisting essentially of," consists essentially of," and the like or the respective closed phrases "consisting of," "consists of, the like.

[0023] As used herein, the singular forms “a,” “an,” and “the” designate both the singular and the plural, unless expressly stated to designate the singular only.

[0024] The present invention relates to a wearable shopping assistive device that enable hands-free operation through voice commands for facilitating easy shopping experience, thereby allowing the user to interact with the device while remaining focused on their shopping activities.

[0025] Referring to Figure 1, an isometric view of a wearable shopping assistive device is illustrated, comprising a wearable band 101 adapted to be work over a wrist of a user, a pair of annular members 102 connected with one another by means of a plurality of telescopic rods 103 attached between the members 102, rods 103 is configured with a plurality of hinges 104, a plurality of motorized pop-out balls 105 embedded along inner surfaces of the members 102, a plurality of hooks 106 mounted on a circular sliding unit 107 mounted on the member 102, hooks 106 are attached with sliding unit 107 by means of telescopic rods 114 an electromagnet 108 embedded in each of the hook 106, an artificial intelligence-based imaging unit 109 installed on the band 101, a speaker 110 provided on the band 101, a microphone 111 is provided on the band 101, a holographic projection unit 112 installed on the band 101 and a piezoelectric unit 113 installed in the band 101.

[0026] The device disclosed herein includes a wearable band 101 that is developed to fit comfortably and securely over the wrist of the user while providing both flexibility and adjustability. The band 101 is made up of two annular members 102 which are ring-shaped structures that are worn over the wrist portion. These annular members 102 are connected to one another by a series of telescopic rods 103 that function as the primary means of adjusting the band's size and fit around the user's wrist. The telescopic rods 103 are powered by a pneumatic unit that allows the two parts of the band 101 to expand and retract smoothly as needed which depends on the wrist's diameter.

[0027] Each of these telescopic rods 103 is equipped with a plurality of hinges 104 which provide additional flexibility to the structure. The hinges 104 allow the telescopic rods 103 to bend or pivot as the band 101 adjusts to the wrist for ensuring that the band 101 conform to the wrist's shape regardless of size or the movements of the user. The rod’ telescopic action enables the band 101 to expand or retract with ease for facilitating a comfortable and adaptable fit which is especially important when considering different wrist sizes and shapes.

[0028] As the user wears the band 101, the telescopic rods 103 and hinges 104 work in conjunction to allow the annular members 102 to move along the wrist for expanding or contracting based on the user's needs. The hinges 104 allow the telescopic rods 103 to bend and adjust for giving the band 101 an ability to move with the natural motion of the wrist in view of ensuring that the band 101 do not cause any restriction or discomfort during use. The flexible configuration of the band 101 ensures that the band 101 remains stable and functional throughout the shopping experience, whether the user is reaching for items on shelves, carrying shopping bags, or navigating through the store.

[0029] A microphone 111 is mounted on the band 101 that allows users to interact with the band 101 through voice commands for enhancing the convenience and hands-free functionality. The microphone 111 captures the user's voice inputs, which are then processed by an inbuilt microcontroller embedded in the band 101. This enables the user to perform various tasks without needing to physically interact with the device. The voice recognition module understands and execute commands in real time in view of allowing for seamless control of the device while the user is engaged in other activities. The voice controlled feature makes the interaction with device more intuitive and accessible especially for those who prefer hands-free interaction or have their hands full while shopping.

[0030] Multiple motorized pop-out balls 105 are embedded along the inner surfaces of the annular members 102 for ensuring the smooth and comfortable movement of the band 101 as it adjusts around the user's wrist. These pop-out balls 105 are developed to facilitate the expansion and retraction of the wearable band 101 by enabling the band 101 to glide smoothly along the user's wrist, which is essential for both comfort and ease of use. The motorized pop-out balls 105 are placed within the inner surfaces of the annular members 102. These balls 105 are motorized which allows the balls 105 to "pop out" and engage with the wrist's surface when the band 101 is adjusting. When the device is in the process of expanding or contracting to accommodate the wrist's size, the pop-out balls 105 function similar to roller ball bearings for providing a continuous, low-resistance glide between the wearable band 101 and the wrist. This reduces the friction that occur if the inner surfaces of the band 101 directly touched the skin, thus making the process of adjusting the band 101 smoother and more comfortable.

[0031] These motorized pop-out balls 105 pops out slightly from their embedded positions within the band 101 to touch the skin of the wrist and as the annular members 102 either expand or retract, the balls 105 return back into their stowed state for effectively allowing the band 101 to slide with minimal friction. When the band 101 expands, the balls 105 help distribute the force of the movement across the wrist for preventing pressure points and ensuring that the user do not experience any discomfort during the adjustment. The smooth motion of these pop-out balls 105 enables the band 101 to glide naturally along the wrist which mimics the wrist's natural movement, while providing stability and preventing any jerky or sudden shifts that cause discomfort. In an embodiment, the balls are supported by a pneumatic spring loaded arrangement that imparts motion to the balls in order to pop out of the band.

[0032] By ensuring that the expansion and retraction of the band 101 occur smoothly, the pop-out balls 105 minimize any potential pinching, pulling, or discomfort that otherwise arise from a more rigid or less flexible design. The balls 105 ensure that the band 101 adjust without resistance for providing a seamless fit around the wrist. This is especially important for users who wear the band 101 for extended periods, as any discomfort from friction or rough movement detract from the overall user experience.

[0033] An ultrasonic sensor is integrated within the band 101 for detecting the diameter of the user's wrist in view of enabling the device to adjust itself automatically to provide a comfortable and secure fit. The ultrasonic sensor works by emitting high-frequency sound waves and measuring the time taken for the waves to reflect back after hitting the user's wrist. By calculating the time delay between emission and reception of the sound waves, the sensor determines the distance between the band 101 and the wrist in view of allowing the sensor to accurately measure the wrist's circumference.

[0034] Once the sensor has obtained the wrist's diameter, this information is sent to the microcontroller embedded within the device. The microcontroller, acting as the central processing unit, then processes this data and triggers the appropriate actions needed to adjust the band 101 to fit the wrist securely and comfortably. The adjustment process involves actuating the telescopic rods 103 and hinges 104 that connect the annular members 102 of the band 101. These rods 103 and hinges 104, which are capable of expanding or contracting adjust the band's size based on the detected wrist diameter. The ultrasonic sensor works in real-time which means as the user wears the band 101, the ultrasonic sensor continuously monitors the wrist's diameter and thus makes necessary adjustments to ensure that the band 101 remains snug but not too tight. The adjustment eliminates the need for manual resizing and making the band 101 user-friendly and highly adaptable to different wrist sizes.

[0035] A set of hooks 106 are mounted on a circular sliding unit 107 installed on the outer periphery of the annular member 102 for carrying shopping bags without requiring the user to hold them directly. The circular sliding unit 107 which is developed to move along the annular members 102 of the band 101 enables the hooks 106 to shift positions as needed, thus offering flexibility for the user. Each hook 106 is attached to the circular sliding unit 107 via telescopic rods 114 which are equipped with hinges 104 at their ends. The telescopic rods 114 serve a dual purpose as they allow the hooks 106 to extend and retract and the hinges 104 provide flexibility for the hooks 106 to adjust their angle or orientation based on the user's wrist movement. This ensures that the hooks 106 hang the bags in a way that prevents discomfort or strain on the user’s wrist in view of allowing for a more balanced distribution of the weight of the bags. The hooks 106 slide one by one i.e. After one hook is engaged, the next hook will move into position, and the hook's position will also adjust based on the movement of the user's hand.

[0036] The telescopic rods 114 with hinge joint ensures that they are adjustable to different bag sizes or weights and the band’s positioning is customized based on the user’s specific needs. For example, if the user is carrying multiple shopping bags, the hooks 106 are able to extended further from the band 101 to distribute the weight more evenly, or they are retracted when fewer bags are being carried which offers a more compact and segregated way. This also contributes to the comfort of the user by preventing the band 101 from pressing too tightly into the wrist when bags are hung. The ability of the hooks 106 to slide and adjust along the circular unit ensures that the weight of the shopping bags is distributed in such a way that the user’s wrist is not subjected to excessive pressure or discomfort. This is especially important for long shopping trips or when carrying multiple items as this provides flexibility and reduces the physical strain that typically comes with carrying heavy bags for extended periods.

[0037] An electromagnet 108 is embedded in each of the hooks 106 to provide a means for stowing and securing the hooks 106 when they are not in use. The electromagnet 108 ensures that this attach the hook 106 firmly to the wearable band 101 for preventing it from swinging or shifting during activities when the hooks 106 are not needed for carrying shopping bags. When the hooks 106 are not in use, the electromagnet 108 are activated to create a magnetic attraction between the hook 106 and the annular member 102 of the wearable band 101. This allows the hooks 106 to snap into place and remain securely stowed within the band 101 in view of reducing any potential for interference or discomfort to the user. The ability to securely stow the hooks 106 ensures that the user wear the band 101 without worrying about the hooks 106 protruding or getting in the way for providing a streamlined and compact form when carrying fewer items or not carrying any bags at all. When the user use the hooks 106 for carrying bags, the electromagnet 108 are deactivated, thus causing the hooks 106 to become free and movable on the circular sliding unit 107. This ensures that the hooks 106 are always available when needed but are securely stored away when they are not in use.

[0038] A weight sensor is integrated into each hook 106 that provides real-time monitoring of the weight of the shopping bags being carried by the user. The sensor accurately measures the load applied to the hook 106 without being obtrusive or affecting the overall configuration of the band 101. The weight sensor functions by detecting the force exerted by the hanging shopping bag and converting this physical force into an electrical signal that is processed by the microcontroller. As the user hangs the bag on the hook 106, the weight sensor measures the gravitational force acting on the hook 106 which directly correlates to the weight of the bag. The sensor is developed to be highly sensitive and precise in view of allowing it to detect a wide range of weights from light grocery bags to heavier shopping bags. The sensor operates by using strain gauges which deform slightly under pressure and the deformation is proportional to the weight applied to the hook 106 and is measured electronically. The resulting data is then sent to the microcontroller embedded within the band 101 for further processing.

[0039] Once the weight sensor detects the weight of the bag, it compares this value to a pre-fed threshold value which corresponds to the maximum allowable weight that the hook 106 and wearable band 101 safely handle. If the weight exceeds this threshold, the weight sensor triggers the microcontroller to take action. Specifically, the microcontroller activates a wireless communication unit embedded in the band 101 for sending an alert to the user's connected computing unit which include but not limited to a smartphone, tablet, or smartwatch. The alert notifies the user that the weight of the shopping bag is too heavy for the hook 106 and that an overload condition has occurred. The overload detection ensures that the user do not overburden the band 101 which lead to damage or discomfort. By providing timely notifications, the device helps prevent the user from carrying excessive weight on the hooks 106 for protecting both the device and the user's wrist. When the weight increases to a certain threshold (for example, when an item is hung on a hook), the band separates, and the rods expand to adjust the wristband's position, ensuring a more comfortable fit and proper placement on the wrist.

[0040] In addition to the weight sensor, each hook 106 is equipped with a tactile sensor for assessing the condition of the bag’s handle. The tactile sensor detect the hardness or rigidity of the handle of the shopping bag. This is important because the condition of the bag’s handle directly affects how much strain the band 101 endure without breaking or causing discomfort to the user. The tactile sensor works by measuring the pressure or force exerted on the handle of the bag when it is hung on the hook 106. The sensor detects how much the handle compresses or deforms when subjected to the weight of the bag. The sensor is calibrated to recognize changes in the handle's texture or hardness, identifying whether the handle is too soft or fragile to support the weight of the bag safely. For example, a leather handle is more rigid, while a plastic or fabric handle have a certain level of softness that indicate wear or fragility.

[0041] When the tactile sensor detects that the hardness of the handle falls below a preset threshold i.e., when the handle becomes too soft or delicate to safely hold the bag’s weight, this triggers the microcontroller to activate the wireless communication unit mounted on the band 101. The microcontroller then sends an alert to the user’s computing unit which notifies the user that the handle of the bag is too fragile for the current weight and break or tear if the user continues to carry the bag in its current state. This helps prevent damage to both the bag and the user’s wrist. If the sensor detects that a delicate handle is being used for a heavy load, this warns the user which reduces the risk of unexpected breakage or discomfort. The tactile sensor essentially acts as a preventative measure for alerting the user to potential issues before they escalate. For example, if the user is carrying the bag with the handle that is too soft for the weight of the items, they are advised to redistribute the load or switch to another bag with a sturdier handle, thus avoiding accidents or damage.

[0042] A pressure sensor is incorporated in the member 102 for monitoring the pressure applied to their wrist while wearing the band 101. The pressure sensor detects any forces that is acting on the user's wrist as they carry shopping bags using the hooks 106. The sensor continuously monitors the pressure on the wrist for indicating whether the band 101 is being worn in a comfortable and ergonomic position or if adjustments are necessary to prevent discomfort or injury.

[0043] When the user wears the band 101, the pressure sensor constantly measures the amount of pressure exerted by the band 101 around the wrist. The sensor detect minute changes in pressure, such as when the band 101 is too tight, too loose, or unevenly positioned on the wrist, causing discomfort. If the pressure exceeds a predefined threshold value, indicating that the band 101 is too tight or causing discomfort, the sensor triggers the microcontroller to take corrective action. This threshold is carefully calibrated to prevent the device from applying excessive force that lead to pain or even strain injuries over time.

[0044] Upon detecting excessive pressure, the pressure sensor sends a signal to the microcontroller, which processes the data and activates the wireless communication unit embedded in the band 101. The notification prompts the user to adjust the position of the band 101 or loosen it to alleviate the pressure on the wrist. In some cases, the device even recommends a specific adjustment, such as shifting the band 101 higher or lower on the wrist to ensure that the load of the shopping bags is more evenly distributed.

[0045] A gyroscope is installed in the member 102 that enhances the user’s experience by ensuring that the position and orientation of the band 101 on the wrist are optimized for comfort and practicality. The gyroscope detects the rotational movement or orientation to track the movement and positioning of the user’s wrist in real-time. As the user moves their wrist whether to walk, reach for products, or adjust their position, the gyroscope constantly monitors the angle and orientation of the wrist relative to the rest of the body. This allows the device to detect any changes in wrist position that affect the comfort or functionality of the band 101, particularly when carrying shopping bags. For example, if the user tilts their wrist at a certain angle while carrying a heavy bag, this cause the bags to swing uncomfortably or put undue strain on the wrist, leading to discomfort or poor ergonomics.

[0046] To address this, the gyroscope communicates with the microcontroller, which processes the data and adjusts the device’s position accordingly. In particular, the microcontroller triggers the motorized pop-out balls 105 to translate and rotate the band 101 along the wrist. This adjustment shift the band’s position and orientation to better distribute the load of the shopping bags, maintaining a more comfortable position on the wrist. For example, if the wrist is bent or rotated in such a way that the bags become uncomfortable, the microcontroller uses the data from the gyroscope to actuate the pop-out balls 105, thus repositioning the band 101 to maintain an optimal orientation and relieve any potential strain or discomfort.

[0047] An artificial intelligence (AI)-based imaging unit 109 mounted on the band 101 for providing real-time product recognition and information retrieval, and price comparison. The imaging unit 109, embedded in the band 101, is equipped with a high-resolution camera that capture images of products in the user's vicinity while they are shopping. This camera works in conjunction with an AI protocol to process and analyze the captured images in view of enabling the device to recognize products automatically.

[0048] When the user is browsing through a store, the AI-based imaging unit 109 continuously scans the products within its field of view, identifying objects based on pre-trained protocols. These protocols use computer vision techniques to analyze the images and match them to a database of known products. As the user focuses on a product, the camera captures an image and the AI processor compares the captured image to a catalog of products stored in an internal or cloud-based database. The AI then determines which product is being viewed, even if the user is simply browsing shelves or picking up items, thus removing the need for manual searching or additional steps.

[0049] In synchronization with this image recognition process, a QR (quick response) code scanning module is integrated within the device. QR codes are often found on product packaging in retail environments, and they provide detailed information about the product when scanned. The imaging unit 109 not only recognize a product visually but also detect and scan any QR code present on the product packaging. Once the QR code is identified, the device decodes it to gather detailed product information, such as the product's specifications, ingredients (in the case of food items), manufacturing details, and any other relevant data embedded in the code. This is particularly helpful for users who want to quickly gather all the information they need about a product without having to pick it up or search through various sources.

[0050] Once the product is identified through the combination of AI-driven image recognition and QR code scanning, the device triggers the microcontroller embedded within the band 101. The microcontroller process all the data received from the imaging unit 109 and QR code scanner. Upon identifying the product, the microcontroller activates the wireless communication unit mounted on the band 101. This unit then connects to the user’s computing device and sends the product’s details, including pricing, specifications, and any relevant alerts, directly to the user’s device.

[0051] In addition to providing detailed information about the product, the device offers real-time price comparison from various vendors. The wireless communication unit fetches the price data from multiple online databases, which include major e-commerce platforms or local vendor databases. This price comparison functionality allows the user to instantly compare prices of the same product from different retailers, both online and in physical stores, helping them make more informed purchasing decisions. For example, if the user scans a product in-store, the device also show the price of the same product from an online vendor or a nearby competing store in view of enabling the user to decide whether to purchase the item now or wait for a better price elsewhere.

[0052] The AI-based imaging unit 109, in conjunction with the QR code scanner and price comparison features, enhances the shopping experience by providing the user with comprehensive, up-to-date product information. This saves the user time and effort by allowing them to obtain product details and price comparisons instantaneously, without having to search for information manually or consult store employees.

[0053] An electronic nose (e-nose) is embedded on the band 101 for monitoring the freshness of food products during shopping. The e-nose is equipped with a set of chemical sensors developed to detect volatile organic compounds (VOCs) and gases emitted by food items, particularly those that are indicators of spoilage, such as ethylene, ammonia, or sulfur compounds. As the user shops for perishable goods, the electronic nose continuously analyzes the air surrounding the food items, identifying specific chemical markers associated with freshness or spoilage. This real-time detection allows the device to assess whether a particular food product, such as fruits, vegetables, dairy, or meat, is still fresh or nearing its expiration or spoilage threshold.

[0054] Once the electronic nose detects any irregularities or signs of reduced freshness, it triggers the microcontroller to processes the sensor data and evaluates whether the freshness of the product meets predefined thresholds set by the system. If the freshness level falls below an acceptable limit, the device activates the wireless communication unit to send a notification to the user via a built-in speaker 110 on the band 101. The alert from speaker 110 informs the user about the potential spoilage or reduced quality of the food item, allowing them to make more informed decisions about their purchase. This not only enhances the shopping experience by ensuring that users select the freshest products but also helps to reduce food waste by guiding consumers away from items that may spoil quickly.

[0055] A holographic projection unit 112 mounted on the band 101 enhances the user’s shopping experience by providing real-time visual feedback on products. The holographic unit is capable of projecting detailed, high-resolution images onto the products that the user is examining, such as highlighting any damaged areas or imperfections detected by the imaging unit 109. This allows users to quickly assess the quality of a product, such as checking for scratches, dents, or defects in packaging, without needing to handle the product or rely on store signage. By visually pinpointing areas of concern, the holographic projection helps users make more informed purchasing decisions, improving convenience and minimizing the risk of buying defective items.

[0056] The holographic projection unit 112 is used to display a map of the shopping complex, aiding in navigation within the store or mall. This map is generated based on data fetched from a connected database for providing users with an overview of the store layout, product locations, and key areas like exits or restrooms. The projection unit 112 is coupled with a GPS (global positioning system) unit embedded in the band 101 which tracks the user’s current location, the device provide real-time, turn-by-turn directions to guide the user to specific products or sections within the shopping complex. This navigation feature is particularly useful in large or unfamiliar stores, helping users quickly find the items they need without wasting time or energy navigating aisles.

[0057] A piezoelectric unit 113 installed in the band 101 which harnesses the energy generated by the user’s movements to power the device. As the user walks, moves their arms, or interacts with products, the piezoelectric material within the unit converts mechanical energy from these motions into electrical energy. This energy is then used to charge a battery integrated into the device, ensuring it remains operational without the need for frequent external charging. The piezoelectric energy harvesting feature offers a sustainable and efficient way to extend the device's battery life, allowing it to function continuously throughout long shopping trips or daily use. By leveraging the user's natural movements, this system minimizes the need for additional power sources and makes the device more convenient, eco-friendly, and self-sustaining for further enhancing the overall user experience.

[0058] The present invention works best in the following manner, where the user wears the band 101 on their wrist, which consists of two adjustable annular members 102 connected by telescopic rods 103 with hinges 104 for allowing the band 101 to comfortably conform to the wrist size. The ultrasonic sensor detects the wrist's diameter and the microcontroller adjust the band’s fit by actuating the rods 103 and pop-out balls 105 embedded in the inner surfaces for smooth movement. Once adjusted, the user hang shopping bags on hooks 106 attached to the sliding unit 107, which moves along the band 101, with each hook 106 being capable of holding bags securely. The hooks 106 are equipped with electromagnet 108 that stow them when not in use. As bags are hung, weight sensors detect the load and send alerts to the user if the weight exceeds safe limits. The tactile sensors monitor the hardness of bag handles, alerting the user if the handle is too delicate for the weight. The pressure sensor in the band 101 monitors wrist pressure, prompting the user to adjust the band 101 if needed and the gyroscope tracks wrist orientation and adjusts the band 101 to maintain bag stability. As the user browses products, the AI-based imaging unit 109 with the QR code scanner identifies items and provides product details and price comparisons via the wireless communication unit. Also, the electronic nose to monitor food freshness and the microphone 111 for voice commands with the holographic projection unit 112 for displaying product damage or guiding the user through the shopping complex using GPS.

[0059] Although the field of the invention has been described herein with limited reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternate embodiments of the invention, will become apparent to persons skilled in the art upon reference to the description of the invention. , Claims:1) A wearable shopping assistive device, comprising:

i) a wearable band 101 adapted to be worn over a wrist of a user, comprising a pair of annular members 102 connected with one another by means of a plurality of telescopic rods 103 attached between said members 102, wherein each of said rods 103 is configured with a plurality of hinges 104 enabling adjustment and movement of said band 101 with a wrist of said user;
ii) a plurality of motorized pop-out balls 105 embedded along inner surfaces of said members 102 to enable a smooth gliding of said members 102 along wrist of said user during an expansion or retraction of said members 102;
iii) an ultrasonic sensor disposed in said member 102 that detects a diameter of wrist of said user to trigger a microcontroller to actuate said rods 103 and hinges 104 to adjust position of said members 102 with respect to one another and said pop-out balls 105 to translate said band 101 on said wrist, for a comfortable and secure fit of said band 101 on said wrist;
iv) a plurality of hooks 106 mounted on a circular sliding unit 107 mounted on said member 102, wherein said hooks 106 are attached with said sliding unit 107 by means of telescopic rods 114 having hinge joint at the ends, for hanging of shopping bags on said hooks 106;
v) an electromagnet 108 embedded in each of said hook 106, for attaching of said hook 106 with said member 102 when in a stowed form;
vi) a weight sensor embedded in each said hook 106 to detect weight of bag hung in said hook 106 to trigger a microcontroller to actuate a wireless communication unit mounted on said band 101 to push an alert to a computing unit of said user, regarding an overloaded condition;
vii) a tactile sensor integrated in each of said hooks 106 to detect a hardness level of said bag, to trigger said microcontroller to actuate said wireless communication unit to send an alert to said computing unit regarding said bag being delicate if said hardness is below a threshold hardness for said weight detected by said weight sensor;
viii) a pressure sensor embedded in said member 102 to detect a pressure on wrist of said user, to prompt said user, via said wireless communication unit, to change position of said band 101 if said detected pressure exceeds a threshold pressure;
ix) a gyroscope integrated in said member 102 to detect an orientation of wrist of said user, to trigger said microcontroller to actuate said pop-out balls 105 to translate and rotate said band 101 to maintain a position of hanging bags to prevent discomfort to said user; and
x) an artificial intelligence-based imaging unit 109, installed on said band 101 and integrated with a processor for recording and processing images in a vicinity of said housing, in synchronisation with a QR (quick response) code scanning module, to determine product being browsed by said user to trigger said microcontroller to actuate said wireless communication unit to provide information regarding said product on said computing unit, including price comparison of various vendors as fetched from online databases.

2) The device as claimed in claim 1, wherein an electronic nose incorporated on said band 101 to determine freshness of food being bought to trigger said microcontroller to actuate said wireless communication unit to push a notification to said user via a speaker 110 provided on said band 101.

3) The device as claimed in claim 1, wherein a microphone 111 is provided on said band 101, connected with said microcontroller to enable said user to operate said device via voice commands.

4) The device as claimed in claim 1, wherein a holographic projection unit 112, installed on said band 101 to project image onto products highlighting damaged portions detected by said imaging unit 109, and show a map of the shopping complex fetched from database connected with said microcontroller, wherein a GPS (global positioning system) unit embedded in said band 101 provides current location of said user for navigation.

5) The device as claimed in claim 1, wherein a piezoelectric unit 113 installed in said band 101 to harvest energy from movements of said user to charge a battery associated with said device.