AUTHENTICATING USERS TO ATMS AND OTHER SECURE MACHINES FOR CARDLESS TRANSACTIONS

Systems, apparatus, methods, and computer program products for using quick response (QR) codes for authenticating users to ATMs and other secure machines for cardless transactions are disclosed. Embodiments of the present disclosure read an image displayed on a display of an external device using a mobile device associated with a user authorized to access a secure resource, decode transaction information encoded in the image, transmit the transaction information and an identifier of the mobile device from the mobile device to an authentication system, and grant access to the secure resource if the transaction information and the identifier satisfy an authentication test performed at the authentication system.