The GT-521F32 is an easy-to-use fingerprint scanner for biometric authentication. It’s small, inexpensive, and communicates over TTL, making it ideal for Arduino driven applications. Make sure you grab the compatible pigtail to make this sensor easier to wire up and also read our hookup guide to get started quickly!
Fingerprint Scanner – https://www.sparkfun.com/products/14518
JST-SH Pigtail – https://www.sparkfun.com/products/10359
Hookup Guide – https://learn.sparkfun.com/tutorials/fingerprint-scanner-hookup-guide