CHIBA, JAPAN — Casio Computer Corp. has developed a fingerprint sensor layered on top of a 1.2-inch LCD screen, providing a convenient way for phone makers to incorporate biometric security into their ...

[CNLohr] has been tinkering with some fun parts of late. He’d found out that ordinary LCD screens could be used as simple touch sensors, and he had to try it for himself. He ended up building a little ...