The present invention generally relates to a seal for a cargo/container; and more particularly, to provide a passive RFID based tamperproof sealing device with a unique identification code shielding mechanism.
BACKGROUND
Generally, in cargo industry, the cargo containers are widely employed to ship goods from one location to other location. The cargo containers are widely used in ocean going ships for shipping goods among different continents. Each ship can carry hundreds of such cargo containers. The containers have doors which are locked shut with hasps. Commonly, the hasps are secured with mechanical locks or seals. Such lock includes a strip seal, a rope wire seal, a drum seal, a hex cable seal, a security seal, a padlock, a deadbolt, a lever handle lock, a handcuff seal, a cam lock, a euro profile cylinder, a interchangeable core (IC) cylinders lock, a vending/t-handle lock, a rim latch lock and a steel bolt.
Over a period, burgles/thieves have compromised the security of such cargo doors by compromising the aforementioned locks. The thieves compromise such locks and open the cargo doors and takeout all the valuable items that are stored inside the containers. The cargo containers are shipped via a ship, a train and a truck. The cargo containers are at a higher risk of tampering, theft and vandalism, during the transportation, unloading or loading. For theft and tampering prevention, the existing seals are assigned serial numbers and such seals are then assigned to a container. The serial number, container ID, a shipment carrier, and a destination is entered in the record (i.e. computer or hand-written). However, despite of all such efforts, seals are tampered.

Prevention of such tampering is critical to safeguard the valuable goods within the cargo. Currently, available sealing devices generally include two components: a male part which is inserted into a female part to complete a lock.
Further, when any metal part is brought in contact with the RFID chip in the sealing device, the RFID circuit is completed and with an appropriate reading device the unique RFID identifier information is subject to be stolen. Thus, there is a dying need in the art to provide an RFID sealing device, that does not complete the RFID circuit when a metal rod is inserted to activate the chip and enable a RFID reader to read the information.
The amount of information which could be learned about the goods from the stolen RFID chips is quite a lot. Plus, you never know what the thieves are planning on doing with the information. For example, the stolen RFID tag can be used to steal the contents of the container or can be affixed in another container carrying illegal contraband or materials.
Thus, there remains a need for further contributions in this area of technology. More specifically, a need exists in the area of technology for sufficiently securing locks for the cargo containers and prevent unauthorized reading of data from RFID module.
OBJECTS OF THE INVENTION
An object of the present invention is to provide a device for a security seals to a cargo container.
An object of the present invention is to provide the tamperproof security seals to the cargo container.
An object of the present invention is to prevent loss of the valuable goods by theft during a shipment, a loading and/or an unloading of the cargo container.

An object of the present invention is to prevent loss of RFID information by preventing unauthorized access to the RFID module.
An object of the present invention is to increase the reading range of the RFID module by increasing the length of transmitting antenna.
The present invention generally relates to a seal for cargo/container; and more particularly, to an apparatus and methods for using RFID tag that can indicate the sealing condition of a container and provide the product information to a RFID reader.
SUMMARY OF THE INVENTION
The present invention generally relates to a seal for a cargo/container; and more particularly, to provide a tamperproof RFID based electronic sealing device with a shielding mechanism to prevent unauthorized reading of unique RFID identity code.
In an embodiment, a RFID based electronic sealing device comprises: an elongated metallic antenna member, having a top part and bottom part, and having a hollow inner space; a metal rod disposed in the hollow space and affixed to the top part of the elongated antenna member; one end of the metal rod protrudes outside the hollow inner space near the bottom part; a body member comprising plurality of compartments and having a proximal end and a distal end; a first compartment at the distal end comprises a RFID module having a switch; a second compartment above the first compartment comprises a spring assembly; wherein the spring assembly comprises a base part and a spring part; wherein the base part includes an activation rod to activate the RFID module by pressing the switch associated with the RFID module.
In an embodiment, the RFID based sealing device comprises a "W" groove carved out on both top and bottom enclosure of the body member to provide a locking path and a retraction path; wherein the locking path is narrower than the retraction path.

In another embodiment, the "W" groove is provided on the top and bottom face of the base part of the spring assembly and, protrusions are provided on the top and bottom enclosure that are engageable into the grooves on the base part.
When the elongated metallic antenna member is inserted into the body member, the grooves on the bottom part of the elongated metallic antenna member are engaged by the engagement and the retaining ring assembly and the lock is said to be configured into locked state.
In an embodiment, the elongated metallic insert acts as an antenna for the RFID module.
In an embodiment, the sealing device comprises a metallic sheet in electrical connection with the elongated antenna member and thereby facilitates an increase in the reading range of the RFID module by increasing the size of antenna for the RFID module.
In an embodiment, the body member of the sealing device is wrapped in a metallic sheet to shield the identity of RFID module from unauthorized access.
BRIEF DESCRIPTION OF DRAWING
Embodiments of the present disclosure will now be described, by way of example only, with reference to the following diagrams wherein:
FIG. 1 is a schematic illustration of an elongated metallic antenna member insert of a RFID based electronic sealing device, in accordance with an embodiment of the present disclosure.
FIG. 2 is a schematic illustration of a body of a RFID based electronic sealing device, in accordance with an embodiment of the present disclosure.

FIG. 3A is a schematic illustration of a locked state of a RFID based electronic sealing device, in accordance with an embodiment of the present disclosure.
FIG. 3B is a schematic illustration of a tampered state of a RFID based electronic sealing device, in accordance with an embodiment of the present disclosure.
FIG. 4 is a schematic illustration of body of RFID based sealing device, in accordance with an alternate embodiment of the present disclosure.
DESCRIPTION OF EMBODIMENTS
The following clearly describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
The present invention generally relates to a seal for a cargo/container; and more particularly, to provide a tamperproof RFID based electronic sealing device with a shielding mechanism to protect unique RFID identification code from unauthorized access.
In an embodiment the sealing device has two parts; an elongated metallic insert and a body to lockingly engage the elongated metallic insert; the body of the sealing devices includes an identification mechanism and the elongated metallic insert acts as an antenna for the identification module.
In the preferred embodiment, a RFID based electronic sealing device comprises: an elongated metallic antenna member also known as insert, having a top part and bottom part, and having a hollow inner space; a

metal rod is disposed inside the hollow inner space; one end of the metal rod protrudes outside the hollow inner space near the bottom part; a body member comprising plurality of compartments and having a proximal end and a distal end; a first compartment at the proximal end comprises a RFID module having a switch; a second compartment above the first compartment comprises a spring assembly having a base part, a spring part, an activation rod and plurality of protrusions; a third compartment above the second compartment comprises an engagement ring; the bottom part of the elongated metallic antenna member having a groove formed therein, operable to fit into place with a retaining/retention ring disposed on the inner surface of the engagement ring; protruded part of metal rod disposed in the hollow space of the elongated metallic antenna member is inserted into the third compartment of the body member through an opening near the proximal end of body member; the protruded part of the metal rod then pushes the spring assembly in the second compartment, the activation rod is pushed forward by this action which pushes a switch disposed in the RFID module and thereby activates the RFID module and sets the lock into the locked state.
In an embodiment, the top part of the elongated metallic antenna member is covered by a protective cover.
In an embodiment, a circular groove is cut at the bottom part of the elongated metallic antenna member to be engaged by an engagement ring disposed in the third compartment of body member.
In an embodiment, the body member is covered with a protective covering having a cylindrical opening at the proximal end of the body member.
In an embodiment, the bottom part of the elongated metallic antenna member is inserted into the circular opening and passes through the engagement ring and enables a retaining/retention ring disposed on the

inner surface of the engagement ring to fit into place with the grooves at the bottom part of the elongated metallic antenna member.
In an embodiment, the body member is covered by a metallic foil.
FIG. 1 is a schematic illustration of an elongated metallic antenna member of a RFID based electronic sealing device, in accordance with an embodiment of the present disclosure.
The elongated metallic antenna member 100, also known as insert of a RFID based electronic sealing device, the elongated metallic antenna member functions as an insert to be lockingly engaged into the body member; in accordance with an embodiment of the present disclosure. The elongated metallic antenna member 100 includes a metal part 102 with a hollow inner space (not shown) in the centre. The elongated metallic antenna member 100 consists a top part and a bottom part. The bottom part of the elongated metallic antenna member 100 consists of a circular groove 108. The top part of the elongated metallic antenna member 100 is covered by a protective cover 104 having a broader head part (not shown) and a narrower tail part (not shown). The larger head part prevents sliding/passing of the elongated metallic antenna member element 100 through the hasp/latch of the cargo container. The protective cover 104 is wrapped on the outer side of the metal part 102 of the elongated metallic antenna member 100. The protective covering provides weather and dust proofing to protect the antenna member against rain, dust, and other unfavourable atmospheric conditions.
In an embodiment, a metal rod 106, is configured to be inserted into the hollow inner space of the elongated metallic antenna member 100. The metal rod 106 at one end, is fixedly affixed to the larger head part of the elongated antenna member 100. The metal rod 106 is configured to protrude out of the hollow inner space. The protruding part of metal rod is narrower than the part inside the hollow inner space. In an

embodiment, the protruding part is of 1mm diameter and has a length of 15 cm. In an embodiment, the inside part is of 3mm diameter and has length of 45 cm. It is to be noted that, the above dimensions are just an illustrative example and the metal rod can be made of any length and diameter to enable the primary function of sealing device, without departing from the spirit and scope of the invention.
In an embodiment, the protective cover 104 can be constructed from a material, selected from a set of: a plastic, a polyethylene terephthalate (PET or PETE), a high-density polyethylene (HDPE), a polyvinyl chloride (PVC), a low-density polyethylene (LDPE), a polypropylene (PP), a polycarbonate polystyrene, a carbon fibre.
The sealing device is continuous under exposure of the extreme weather conditions such as high heat, sun light, moisture, water, rain and cold, therefore it would require special material which can withstand afore mentioned environmental condition. The metal part 102 of the elongated metallic antenna member 100, metal rod 106, and the tip part 110 of metal rod 106 can be manufactured from the variety of material which can provide sufficient strength, corrosion resistance, light weight, environment friendly and economical. The exemplary material for manufacturing of metal part can be from the set including but not limited to stainless steel, boron alloy, Titanium, aluminium, copper, magnesium, brass, tin, iron, metal alloy.
In an embodiment, the head of the elongated antenna member can be of any shape such as a sphere, a cone, a pyramid, a cylindrical, a diamond and a prism.
FIG. 2 is a schematic illustration of a body member of a RFID based electronic sealing device, in accordance with an embodiment of the present disclosure. As illustrated, the body member 200, comprises of top enclosure 204 and bottom enclosure 202. The body member

comprises of one or more compartments to accommodate the components.
In the preferred embodiment, the body member has a first compartment 224, a second compartment 226, a third compartment 228, a spring assembly, an engagement ring 206, a RFID module 220 and a metallic sheet 222. The body member comprises of a proximal end and a distal end. The proximal end has an opening 230. In a first compartment 224 at the distal end, a RFID module 220 is provided with an activation switch 218. The activation switch is a push button switch which when pressed activates the RFID module 220. The RFID module includes a RFID chip and one or more electronic components affixed to PCB to form a circuitry. When a RFID chip along with circuitry is activated a RFID reader (not shown) is configured to read the RFID tag information and determine the status of the RFID based electronic sealing device.
In a second compartment 226, that is just above the first compartment is provided with a spring assembly. The spring assembly includes a base part 208, and a spring part 214. The base part 208 of spring assembly includes an activation rod 216, protrusions 210a & 210b on both top face and bottom face (not shown) and a housing to be engaged by the spring part 214. The top enclosure 204 and bottom enclosure 202, has engraved on its inner surface grooves 212. The grooves are etched at a position such as to enable it to get engaged with the protrusions 210. In the preferred embodiment, the shape of the grooves 212 is "W" shaped to facilitate the locking of the sealing device. The "W" shaped groove has three legs: a first leg 232, a second leg 234, and a third leg 236. The first leg 232 of the "W" shape grooves has narrow width, thereby providing a narrow locking path for the movement of the spring assembly during the locking process. It should be noted that, the width of the first leg should be enough to engage with the protrusions 210a. The second leg 234 of the "W" shape grooves has a wider width than the first leg 232. It should be noted that, the width of the second leg

should be enough to engage with the protrusions 210b.This facilitates retraction of the spring assembly through a wider retraction path. A third leg 236, of the "W" shaped groove has a width wider than the width of the first leg 232. It should be noted that, such a narrow and wider width of the "W" shaped grooves facilitates the locking, identity theft prevention and tamper detection.
In a third compartment 228, that is just above the second compartment is attached an engagement ring 206. The engagement ring is configured to hold the bottom part of the elongated metallic antenna member 100. The engagement ring 206 further comprises a retaining ring (not shown) to snap fit into the groove 108 provided on the bottom part of elongated metallic antenna member 100. This is provided so that the elongated metallic antenna member can be retained in the body member and cannot be pulled out, once in a locked state. The diameter of the cylindrical opening 230 at the proximal end of the body member 200, is made slightly larger than the diameter of the bottom part of the elongated metallic antenna member 100, so as to enable the bottom part to be smoothly inserted via the cylindrical opening 230.
The body member 200 as shown (FIG. 2) also comprises a metallic sheet 222 connecting the engagement ring 206 in the third compartment 228 with the RFID module 220 in the first compartment 228.
In an embodiment, the base part 208, the activation rod, protrusions 210a and 210b, the top enclosure 204, and the bottom enclosure 202 can be constructed from a material, selected from a set of: a plastic, a polyethylene terephthalate (PET or PETE), a high-density polyethylene (HDPE), a polyvinyl chloride (PVC), a low-density polyethylene (LDPE), a polypropylene (PP), a polycarbonate polystyrene, a carbon fibre.
FIG. 3A is a schematic illustration of a locked RFID based electronic sealing device, in accordance with an embodiment of the present

disclosure. In this figure as illustrated, the elongated metallic antenna member is shown to be inserted into the body member, thereby locking the RFID based electronic seal. The detailed procedure of how to lock is described below. It should be noted that for sake of clarity, the procedure is being described with components as numbered in FIG. 1 and FIG. 2.
In operation, the bottom part of the elongated metallic antenna member 100, along with the tip part 110, is inserted through the cylindrical opening 230 at the proximal end of the body member 200. The insertion is performed till the point the groove 108 at the bottom part of elongated metallic antenna member 100, snap fits into the retaining ring provided inside the engagement ring 206 in the third compartment 228 of the body member 200. Insertion of the elongated metallic antenna member 100 into the body member 200 via opening 230 pushes the base part 208 of the spring assembly till the activation rod 214 associated with the base part 208 of the spring assembly comes in contact with the switch 218 and sets the switch in ON state and thereby activating the RFID module 220. The length and dimensions of all the components are calibrated such that, they enable the locking of the sealing device.
The three legs of the "W" shape of groove 212 provides narrow path for the locking process and wider path for the retraction process. The first leg 232 is used during the locking process, the second leg 234 is used in locking as well as retraction process whereas the third leg 236 is used only for retraction purpose. The orientation of "W" groove 212 is such that it provides a first end near the proximal end of body member in all the three legs. In unlocked state, the protrusions 210a and 210b on the top face of the base part 208 is engaged at the first end of the "W" groove 212 on the top enclosure 204 in their respective legs. Similarly, the protrusions 210a and 210b on the bottom face of the base part

208 is engaged at the first end of the "W" groove 212 on the bottom enclosure 202 in their respective legs.
In the preferred embodiment, the elongated metallic antenna member 100 pushes the spring assembly; the movement of the spring assembly is guided by the protrusions 210a and 210b engaged into the "W" shaped groove 212 on both the top enclosure 204 and the bottom enclosure 202. The narrow locking path of the first leg 232 of "W" shaped groove 212 guides the movement of spring assembly such that the activation rod 216 is pushed against the switch 218 and the RFID module 220 is activated.
In the locked state, due to the movement of spring assembly in the second compartment 226 towards the first compartment 224, the spring part 214 of the spring assembly is compressed. In the locked state the restoring force generated by the spring part 214 of the spring assembly is balanced against the reaction force generated due to engagement of the groove 108 at the bottom part of the elongated metallic antenna member 100 with the restraining ring inside the engagement ring 206 in the third compartment 228.
In the preferred embodiment, during the locking process the protrusions 210a & 210b moves along with the base part of spring assembly from the first end of "W" shaped groove near the proximal end of the body member 200 towards the first compartment 224 and thereby the switch 218 is pressed by the activation rod 214 and sets the lock in locked state.
In the locked state, the elongated metallic antenna member 100, the engagement ring 206 and the metallic sheet 222 are electrically connected with the RFID module 220 and thereby act as antenna for transmission of signals from the RFID module 220 to a RFID reading device, when the RFID module 220 is activated via the activation rod 214 of spring assembly at the end of locking process.

In the locked state, connection between RFID module 220 and elongated metallic antenna member 100 is achieved via metallic sheet 222, which increases the length of antenna transmitting the signals from RFID module 220 thereby increasing the reading range for the reading of RF signals from the sealing device by an RFID reading device.
In an embodiment, the RFID module 220 may include an identification code. The code can reveal valuable information about the shipment/cargo. To prevent the unauthorized reading of the identification code by a RFID reading device, the sealing device is shielded by a metallic shield.
In an embodiment, a metallic foil is wrapped around the top enclosure 204 and the bottom enclosure 202 of the body member 200 of the sealing device. Metallic covering around the body member 200 shields the RFID module and prevents reading of RFID signals by a RFID reading device.
The metallic foil can be made from any metal from the set including but not limited to stainless steel, boron alloy, Titanium, aluminium, copper, magnesium, brass, tin, iron, metal alloy.
FIG. 3B is a schematic illustration of a tampered RFID based electronic sealing device. The sealing device can be opened only by cutting the elongated metallic antenna member 100 of the sealing device to unlock the latch/hasp of the cargo/container.
In the tampered state, when the elongated metallic antenna member 100 of the sealing device is broken, the rigidity provided to the tip part 110 of the metal rod 106 disposed in the hollow space of the metal part 102 by the broader head part of the top part of the elongated metallic antenna member 100 is lost. In the tampered state, the reaction force balancing the restoring force of the spring part 214 becomes zero, the restoring force of the spring part 214 pushes the spring assembly

backwards through the wider retraction path provided by the second leg 234 and the third leg 236 of the "W" groove 212. The backward retraction of the spring assembly through the wider retraction path imparts lateral shifting of the spring assembly relative to the position of spring assembly in locked state thereby disturbing the alignment between the activation rod 216 and switch 218.
In the tampered state, insertion of pin/rod in the hollow space provided by the metal part 102 of the elongated metallic antenna member 100 will not activate the RFID module 220.
The lateral shift in the position of the spring assembly in the tampered state relative to the position of spring assembly in locked state due to retraction of the spring assembly through the wider retraction path disturbs the alignment of the activation rod 216 associated with the base part 208 of the spring assembly thereby, preventing the activation of the RFID module 220 in tampered state if pin/rod is inserted into the body member 200 through the hollow space provided by the metal part 102 of the elongated metallic antenna member 100 of the sealing device.
In an alternate embodiment as disclosed in FIG. 4, a "W" groove 512 is provided on the top and the bottom face of the base part 508. The top enclosure 504 and bottom enclosure 502 are provided with protrusions 510a & 510b engageable into the "W" groove 512 provided on the top and the bottom face of the base part 508. Engagement of the "W" grooves 512 on the top and bottom face of the base part 508 by the protrusions 510a & 510b on the top enclosure 504 and bottom enclosure 502 provides capability to the base part so that the base part 508 can slide guided by the protrusions 510a and 510b engaged with the first leg 532 and second leg 534 respectively, when the base part is pushed by the insertion of elongated metallic antenna member (insert) into the body member 500 (body). When the elongated metallic

antenna member is inserted into the body member, the base part is pushed towards the first compartment 524 and the switch 518 associated with the RFID module 520 is pressed and RFID circuitry is activated thereby setting the lock into locked state.
The first leg 532 of the "W" groove 512 provides narrow locking path; the second leg 534 and the third leg 536 provide wide retraction path. During the locking process, the protrusion 510a & 510b travels in the locking path. Tampering of the antenna member causes traversal of the protrusion 510a & 510b through the retraction path and thereby imparting lateral shift to the activation rod 516. In actuality the protrusions 510a & 510b is stationary and the base part 508 slides over the protrusion but, in the present embodiment the working is explained by considering the relative motion of protrusions 510a & 510b with respect to base part 508.
When the elongated metallic antenna member is inserted into the body member, the tip part if the metal rod disposed in the antenna member pushes the base part 508 such that the base part 508 slides over the protrusions 510a & 510b and spring part 514 of the spring assembly is compressed. Sliding of the base part 508 through the locking path of the "W" groove 512 facilitates pressing of the switch 518 by the activation rod 516 and thereby activating the RFID module 520.
When the elongated antenna member is tampered, the spring part 514 of the spring assembly exerts a restoring force and causes the base part 508 to slidably retract via retraction path of the "W" groove 512.
In the tampered state, the switch 518 is released, and RFID module is deactivated. Due to retraction of base part 508 through the retraction path, alignment of activation rod 516 and switch 518 is disturbed. Once the alignment of activation rod 516 and switch is disturbed, the activation rod cannot press the switch again even if the base part is pushed towards the first compartment 524.

In an exemplary embodiment, switch 518 and switch 218 can be a one¬time use switch. The switch can be of any kind from the set including but not limited to mechanical switch, electrical switch, push button switch, transistor-based switch.
In an embodiment, the design of the RFID based electronic sealing device is such that, the RFID information cannot be read without breaking the body member of the sealing device. Even if one tries to insert as metallic part inside the body member, the PCB having the RFID chip is not connected and hence the RFID information is not revealed as in similar prior art RFID based electronic locks.
In an embodiment, when the RFID based electronic seal passes or comes within a pre-set range/proximity of an RFID reader in a remote control centre (not shown in the figure), the RFID reader sends electromagnetic energy in the direction of the sealing device which is sensed by the antenna present in the sealing device. This energy is converted into RF waves. The sealing device antenna draws energy from the RF waves and activates the electronic components. Upon activation of the electronic components, an information/signal corresponding to the identification of the sealing device is generated, wherein the information can include RFID related data such as RFID signal. This RFID signal is interpreted by the RFID reader in the remote-control centre to identify the unique information of the sealing device. Disengagement or withdrawal of the elongated metallic antenna member element 100 coupled to the body element 200, breaks the connection between the antenna and the electric conductive probes, which results in deactivation off the electronic circuitry. Hence, the seal no longer transmits the identification data to the remote-control centre. Thus, the remote-control centre may realise that the seal has been tampered or removed. The remote-control server may scrutinize the removal of the seal by an authorized person. In an event of unauthorized access of the sealing device notice, centre may transmit the alerts/notifications. The alert

may be in form of a sound, a tone, a SMS, an email etc. The alert may be transmitted to a device associated with a cargo owner, a shipping company, the governmental agencies and/or the other server arrangements.
In an embodiment, a unique identification code can be assigned to the sealing device through the RFID tag. In another embodiment, the unique identification code can be used as a secret key, which was pre-shared to the owner of the device and to a third party who intend to receive the cargo. On delivery of the cargo either the owner or the third party may enter/read the unique identification code to open the seal. In case, the sealing device was tampered after getting sealed, the RFID circuit stops working thereby an indication that the sealing device is compromised.
The components of the sealing device can be manufactured by any methods are known state of the art such as an injection moulding, an extrusion moulding, a blow moulding, a compression moulding, a rotational moulding, a vacuum forming, a die casting, a sand casting, stamping, a forging, a 3D printing, a chemical vapour deposition, a sputter deposition, a sintering, a pressing, a rolling, a bending, a trimming, a shaving, a notching, etc.
ADVANTAGES OF THE INVENTION
The present disclosure overcomes one or more disadvantages associated with conventional systems.
The present invention provides a device for a secure sealing of cargo container.
The present invention provides a tamperproof security seals to the cargo container.
The present invention provides prevention of reading the RFID information prior to locking by way of a locking and shielding mechanism.

The present invention prevents loss of the valuable goods by theft products during a shipment, a loading and/or an unloading of the cargo container.
The present invention prevents unauthorized access to the identification data of the sealing device.
The present invention provides a device with increased reading range.
The present invention generally relates to a seal for cargo/container; and more particularly, to an apparatus and methods for using RFID tag that can indicate the sealing condition of a container and provide the product information to a RFID reader.

We claim:

1.A RFID based electronic sealing device comprising:
an elongated metallic insert;
a body, formed by connecting a top enclosure and a bottom
enclosure;
wherein the body comprises,
plurality of compartments formed therein, a RFID module, a
metallic sheet and a spring assembly;
wherein at least one of the plurality of compartments comprises
one or more grooves on the top and the bottom enclosure to
facilitate the locking of the sealing device;
wherein inserting the elongated metallic insert through an opening
in the body activates the RFID module; and
wherein a metallic wrapper is wrapped around the body to shield
RF signals from identity theft.
2. The sealing device of claim 1, wherein the grooves comprises at
least one locking path and at least one retraction path, wherein the
locking path is narrower than the retraction path.
3. The sealing device of claim 1, wherein the grooves facilitate locking by pushing the spring assembly to connect with the RFID module through the locking path.
4. The sealing device of claim 1, wherein the grooves facilitate unlocking by pushing back the spring assembly through the retraction path in case of tampering of the insert.

5. The sealing device of claim 1, wherein the insert comprises: a first end, a second end, and a hollow space having a metallic rod engaged therein and protruding out from the second end.
6. The sealing device of claim 1, wherein the body comprises an engagement ring affixed into one of the said plurality of compartments, wherein the engagement ring comprises a retention ring on the inner surface.
7. The sealing device of claim 1, wherein a circular groove is cut at the second end of the elongated metallic insert to snap fit with said retention ring.
8. The sealing device of claim 1, wherein in tampered state a RFID reader cannot detect radio signal from the sealing device.
9. The sealing device of claim 1, wherein the metallic sheet, the RFID module, the engagement ring and the metallic rod are in physical contact in the locked state.
10. The sealing device of claim 9, wherein the physical contact is functional to increase the reading range of RFID signal transmitted by the sealing device.
11. A RFID based electronic sealing device comprising:
an elongated metallic insert;
a body, formed by connecting a top enclosure and a bottom enclosure;
wherein the body comprises, plurality of compartments formed therein, a RFID module, a metallic sheet and a spring assembly;

wherein the spring assembly comprises a base part having a top face and a bottom face, and a spring part;
wherein the base part comprises grooves on both the top face and the bottom face;
wherein at least one of the plurality of compartments comprises one or more protrusions on the top and the bottom enclosure to facilitate the locking of the sealing device;
wherein inserting the elongated metallic insert through an opening in the body activates the RFID module; and
wherein a metallic wrapper is wrapped around the body to shield RF signals from identity theft.
12. The sealing device of claim 1 or claim 11, wherein the RFID module is activated by a one-time use switch.