While Apple and Samsung race to be the first company to perfect a fingerprint scanner that resides under a smartphone's display, a Chinese company called Vivo has already done it. Vivo is launching ...

A secure electronic voting system with real-time authentication and keypad enables accurate, tamper-proof voting through ...

The biggest stories of the day delivered to your inbox.

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...