The latest expression of this thesis is Sandbar, a voice-activated ring designed to capture thoughts the moment they appear. Rather than replacing phones outright, it sidesteps them — offering a more natural interface for ideas, memory, and intelligence.

For Callaghan, this mirrors earlier successes: “It’s not about the device; it’s about the behavior.” As smartphones plateau and wearables grow at double-digit rates, True is betting that the next tech shift won’t live in our pockets — but on our bodies, woven quietly into how we think and act.