ACC PIN Reader
As the threat of theft rises, users can implement the ACC PIN Reader to increase pin code security. The design is built around an EK-LM3S9B96 that has been supplemented with a keypad pattern display, a touch panel, Wiegand interface, and a couple of indicators. The display shows random keypad patterns. The Stellaris microcontroller detects touch, computes touch position coordinates, and converts them to key codes that are then transmitted to an ACC controller.