New technology could make controlling text or other mobile applications as simple as '1-2-3.' Using acoustic chirps emitted from a ring and received by a wristband, like a smartwatch, the system is able to recognize 22 different micro finger gestures that ...

When you write your name in the air, you can see the letters appear on your smartphone. By Cade Metz Reporting from San Francisco The prototype looks like a giant rectangular wristwatch. But it doesn’t tell the time: It lets you control a computer from ...