Founded by former Ultrahuman executive Apoorv Shankar, Aina has unveiled an AI-powered ring that anticipates user needs and controls apps and devices, with pre-orders from $399. Aina, a venture-backed consumer hardware company founded by Apoorv Shankar, the former vice-president of hardware at Ultrahuman, unveiled an AI ring with a screen designed to anticipate everyday actions and control agents, phone apps, Macs and connected devices.