The ATM is able to prevent dispensing of currency in situations where unauthorized detection of signals is sensed. Security password is entered through the keypad. When you entered the correct password then further process is proceed otherwise it will ask the correct password. If you enter 3 times wrong password then a sms received on your mobile that your card is blocked for 24 hours. And if you successfully done your transaction then sms received on your mobile will be transaction successful.
This project used to secure our transaction through ATM CARD.