New smart ring is a novel way to control your computer — it has the humble mouse firmly in its sights

Somebody wearing the prototype picoRing mouse and accompanying wristband.

Researchers have developed a lightweight computer mouse that you wear on your finger like a ring and works for more than a month on a single charge.

Called picoRing, the device weighs just 0.18 ounces (5 grams) and is designed as a discreet, low-power alternative to traditional mice.