Touch Screen Authentication for Automated Banking Machines

The patent replaces traditional mechanical keypads and card readers with a touch screen display that processes finger movements. The touch screen detects predefined finger movement patterns (swipes, taps, circles) to authenticate users, eliminating the need for physical key entry and card insertion. This substitution improves security by capturing unique biometric movement patterns while reducing device complexity by consolidating multiple authentication mechanisms into a single interface.

The patent changes the authentication parameter from static data (card numbers, PINs) to dynamic biometric data (finger movement patterns, swipe trajectories, pressure applied). The touch screen captures multiple parameters including position, velocity, acceleration, and timing of finger movements to create a unique authentication signature. This parameter change enhances security by making authentication harder to replicate while maintaining user convenience.

The patent introduces a validator device as an intermediary component between the cash acceptor mechanism and the transaction processing system. The validator device receives financial instruments from the cash acceptor and performs comprehensive authentication including detection of security features, watermarks, and other counterfeit indicators. This intermediary layer enhances authentication accuracy by providing specialized validation capabilities without requiring the entire system to be redesigned.

The patent implements preliminary validation of financial instruments before they are processed for transactions. The validator device performs authentication checks, detects counterfeit features, and verifies instrument validity before the cash acceptor mechanism completes the transaction. This preliminary action prevents counterfeit notes from entering the system, improving authentication accuracy while allowing the use of relatively simple cash acceptor hardware.