Sandbar raises $36M for voice ring Stream, bets on push-to-talk to survive AI hardware graveyard

The voice hardware market has seen a wave of recent entrants—credit-card-sized devices, pendants, pins, and transcribing earbuds—all designed to capture meetings and stray thoughts. Despite this activity, many devices have failed to gain traction, suggesting that hardware form factor alone is not enough to ensure adoption. Sandbar's bet centers on a design philosophy: that social acceptability and user control matter more than always-on convenience. By making Stream push-to-talk rather than always-listening, Fahmi is explicitly choosing friction in exchange for what he believes will feel less intrusive to the wearer and those around them.

Fahmi's prior work at CTRL-labs—a neural interface startup that Meta acquired—likely exposed him to early thinking about direct human-computer input and the importance of user agency in adoption decisions. His decision to build fully custom hardware rather than reskin an off-the-shelf device suggests Sandbar is betting that differentiation at the hardware level, combined with its design philosophy, is necessary to break wearable voice technology out of the tech-enthusiast niche and into mainstream use.