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New Ring Captures Stray Thoughts with AI
12 Aug
Summary
- Sandbar's Stream ring is a private voice device.
- The startup has secured $36 million in funding.
- The ring uses push-to-talk for user control.

The AI notetaking hardware market is expanding, with new wearable devices like rings emerging to capture stray thoughts and ideas. Sandbar, a startup, has raised $36 million in funding, including a $23 million Series A, for its private voice ring called Stream.
Sandbar's co-founder and CEO, Mina Fahmi, discussed the company's strategy on the Equity podcast. He explained why Stream is designed as a push-to-talk device, focusing on "social acceptability" for wearable AI and drawing on his past experience with neural interface technology.
Fahmi highlighted Sandbar's decision to build custom hardware, a challenging but deliberate choice. He believes that keeping humans in control is key to making wearable AI successful and accessible beyond tech enthusiasts.