This project was done using an Arduino Microcontroller hooked up to a magnetic stripe reader that I ripped out of an old hotel phone. When someone swipes a card in the reader it reads the stripe and outputs the results to the LCD screen.
A quick teardown of the NES Zapper Lightgun
A quick teardown of the NES Zapper Lightgun, mostly as a love letter to the geniuses who built this and a girl I will always love