Arduino Based Loan Watcher using GSM

In this modern world, everybody is in need of a vehicle whether it may be a two or a four wheeler. As of now most of them are hiring the vehicles through banks by getting the loans. The customers of the bank are not paying the dues properly after few months, so it creates a great displeasure for the bankers. We found out a solution for the bankers for their safer side. In our project we have an ARDUINO, GSM MODEM system... In this project when you buy the vehicle through loan they will provide A UNIQUE NUMBER via GSM system which operates particular date only. In order to activate the bank will send a SMS to the vehicle where GSM modem is being attached. This PIN number is sent to Arduino. Here the Arduino is the flash type re-programmable Arduino in which we have already programmed with PIN number. So the type PIN number is compared with stored number if the PIN number is valid the Arduino activates the relay driver circuit. Relay output is directly given to engine ignition system. Now we can start the vehicle. This number works for particular month only. After the particular month the Arduino activates the alarm driver circuit. The alarm makes the sound to indicate that number valid date is completed. Now we cannot start the vehicle. The customer has to pay the loan amount to bank. So the bank provides another PIN number via SMS.