Meta unveils wristband for controlling computers with hand gestures

The prototype looks like a giant rectangular wristwatch. But it doesn’t tell the time: It lets you control a computer from across the room simply by moving your hand.

With a gentle turn of the wrist, you can push a cursor across your laptop screen. If you tap your thumb against your forefinger, you can open an app on your desktop computer. And when you write your name in the air, as if you were holding a pencil, the letters will appear on your smartphone.

Designed by researchers at Meta, the tech giant that owns Facebook, Instagram and WhatsApp, this…