A San Francisco startup called Subvocal has launched glasses that type out whatever you mouth without speaking, at up to 200 words a minute.
Low-power radio signals and AI track how facial muscles shift as the wearer mouths words. That lets people write emails or prompt AI tools without making a sound.
Founded in February by Aarush Yadav and Arnav Kumar, the company has raised $1.3 million. The glasses cost $699, or $499 for early preorders, with deliveries expected from March 2027.

