Design and Implementation of ATM Security Using IOT

This paper proposes a secured ATM (Automated Teller Machine) system thatenhances traditional security protocols by incorporating a card scanning system along with a linkbased authentication feature. Current ATM systems typically rely on a two-factor authenticationmodel, where the user must have the ATM card and know the PIN. However, this method remainsvulnerable to fraud if an attacker gains access to both the card and PIN. The proposed systemaddresses this issue by adding an extra layer of security: a link-based authentication process. In thissystem, after the user scans their ATM card and enters their PIN to authenticate, they can view theiraccount details. However, when the user selects the "Money Withdrawal" option, the systemgenerates and sends a unique, time-sensitive link to the user’s registered mobile phone. The usermust then enter this link into the ATM system in order to complete the withdrawal. This additionalstep ensures that even if an attacker gains access to the card and PIN, they cannot performfraudulent transactions without access to the user's registered mobile phone. The proposed systemthus provides a more secure method for ATM transactions by implementing a two level securitystructure, combining something the user knows (PIN) with something the user has (mobile phone).This enhances the protection of user accounts and reduces the risk of unauthorized ATMwithdrawals.