This ring allows users to control devices with gestures. It has sensors and electronics that enable gesture controls like drawing letters in the air to input text or authorizing payments with gestures. It can connect directly to devices or through a hub, and transmit alerts and payments through built-in vibration and LED lights. The ring has a rechargeable battery and precise letter recognition software. A Tokyo-based startup developed it over several years, launching the ring on Kickstarter in 2014.