Stream comes from Sandbar's belief that technology should extend a person's ability to think and express themselves. The ring gives people a way to capture a thought through voice without first opening an app or typing on a screen.
Its design combines a microphone, touch surface and haptic feedback with software for notes, conversation and dictation. Holding to speak and releasing to send makes capture a small physical action, while support across iOS and Mac carries that input into other apps. Sandbar describes the broader goal as an interface that stays close to a person's own thinking.