This invention relates to "DESIGN, IMPLEMENTATION AND TESTING OF EMBEDDED BASED SECURED BANKING SYSTEM"

Economy of the world is impossible without banking system. Banking system provides the base for most of the money transactions. All money transactions through ATM System must be secured from misuse. So Secure ATM Transactions provide a foundation for the ATM industry. To maximize ATMs' effectiveness and profitability, card users must feel safe the ATM's vault must be secured from theft. Nowadays swiping the card, which we are having and entering the password, we are accessing our bank account. This may lead to misuse if the card misses. This number will be increasing year by year if the problem is not rectified.

The above mentioned problem is overcome by our invention, which is done by the authentication of message before the Transaction takes place. After swiping the card m the Card Scanner, which we are having and entering the password in the Display, if the password matches with the card scanned number, then the ATM machine will send an alert message to the account holder through GSM modem to the User's mobile phone.
If the machine receives the authentication message "Ok." from the account holder, then the transaction will be allowed by displaying the mobile number and the message sent from the device in the LCD display. If the machine receives authentication message 'No."
from the account holder, then the buzzer will ring indicating that the transaction is denied by displaying the mobile number and the message sent from the device in the LCD display. In case, if the password entered is wrong, which doesn't match with the card scanned number, then the access will be denied displaying "Not Correct" in the LCD display.

The operation comprises of PIC Microcontroller 16F877A, GSM modem. Card Scanner as Hardware requirements and C Compiler, MP Lab IDE, IC PROG as Software requirements.

Card Scanner is used to scan the card which generates a code number, which is to be matched with the password entered by the user.

The PIC Microcontroller is used for the overall functioning of the ATM system by the coding downloaded in it.

GSM (Global System for Mobile communication) is used for communication between ATM system and User's mobile.

When the password matches with the card scanned number, the PIC Microcontroller (ATM Machine) will send an alert message to the User's mobile through the GSM modem. If the authentication message "Ok." is received, then the transaction will be allowed. If the authentication message "No." is received, then the transaction will be denied with the Buzzer ring.

FIGURE 1 shows the Block Diagram of our project in accordance with our invention.

Referring to FIGURE 1, 4-Digit IR Scanner (3) and Display Unit with Keypad (4), Buzzer (7) and GSM modem (5) which has UART (13) interfaced in it are interfaced to the Input Ports (9 & 10), Output Port (11) and UART (12) (which is inbuilt in PIC Microcontrollerl6F877A (2), which is one of the important component in our invention) respectively.

UART Ports (12 & 13) of PIC Microcontroller (2) and GSM Modem (5) are interfaced through Null Modem Cable (14) respectively. Communication from PIC Microcontroller (2) to the account holder (6) is achieved by Communication Path (16) from GSM Modem (5) through Antenna (15).

The PIC Microcontroller (2), which is used for overall functioning of the ATM system has the coding downloaded in the Flash Program Memory (8), which is inbuilt in PIC Microcontroller (2).

After swiping the card in the 4-Digit IR Scanner (3) and entering the password in the Keypad(4), if the password matches with the card scanned number, then the (ATM Machine) PIC Microcontroller (2) will send an alert message to the account holder (6) through GSM modem (5) to User's mobile phone (6). "

If the authentication message "Ok." is received by the (ATM Machine) PIC Microcontroller(2), then the transaction is allowed by displaying the number and the message from which the message is received in the LCD Display (4). If the (ATM Machine) PIC Microcontroller (2) doesn't receive the authentication message from the account holder (6), then the access will be stopped and waits for the next transaction to take place.

If the authentication message "No." is received from the (ATM Machine) PIC Microcontroller (2), then the transaction will be denied by a Buzzer (7) ring indication by displaying the number and the message from which the message is received in the LCD Display (4).

If the Password is entered wrongly by the user in the Keypad (4), then the access will be denied by displaying "Not Correct" in the LCD Display (4).

We claim,

Claim 1: First Input is given by 4 Digit IR Scanner (3), which consists of 4 IR Transmitters and 4 Photo Diodes in line of sight respectively. Second Input is given by 4X4 Keypad (4).

Claim 2: As per Claim 1, the two Inputs are received by Input ports (9 & 10 respectively), which is inbuilt in PIC Microcontroller (2).

Claim 3: As per Claim 1&2, if both the Inputs match, then the (ATM Machine) PIC Microcontroller (2), which has UART (12) (Universal Asynchronous Receiver and
Transmitter) will send an alert message to the User's mobile (6) through GSM modem (5) which has UART (13) interfaced in it. Communication between the PIC Microcontroller (2) and GSM modem (5) through UARTs’ (12 &13), which is inbuilt in both PIC Microcontroller (2) and GSM modem (5) takes place through Null Modem Cable (14) respectively.

Claim 4: As per Claim 3, when the (ATM Machine) PIC Microcontroller (2) receives the authentication message "Ok." from the account holder, then the (ATM Machine) PIC Microcontroller (2) will allow accessing the account by displaying the number and the
message from which the message is; received in the LCD Display Output. When the (ATM Machine) PIC Microcontroller (2) receives the authentication message "No." from the account holder (6), then the transaction will be denied by displaying the number and the message from which the message is received in the LCD Display (4), which is the Second Output. If the password entered doesn't match with the scanned card number, then the transaction will be denied by displaying "Not Correct" in the LCD Display (4), which is the Third Output.