Three researchers from Michigan State University have developed a low-cost, open-source fingerprint reader which can detect fake prints. They call it RaspiReader, and they’ve built it using a Raspberry Pi 3 and two Camera Modules.
https://www.raspberrypi.org/blog/raspireader-fingerprint-scanner/
https://arxiv.org/abs/1708.07887
https://www.raspberrypi.org/blog/raspireader-fingerprint-scanner/
https://arxiv.org/abs/1708.07887