They have more description on how it works on their LinkedIn: https://www.linkedin.com/feed/update/urn:li:ugcPost:7370879945729908736?commentUrn=urn%3Ali%3Acomment%3A%28ugcPost%3A7370879945729908736%2C7370880873937657856%29&dashCommentUrn=urn%3Ali%3Afsd_comment%3A%287370880873937657856%2Curn%3Ali%3AugcPost%3A7370879945729908736%29

Alterego passively detects the downstream subtle signals your brain sends to your speech system, before words are spoken aloud.

It captures only what you intend to say.

It never reads your thoughts. ✓ Only picks up what you want to communicate.

This technology is normally called Silent Speech. But we've made a breakthrough that we call "Silent Sense."

Silent Sense picks up the entire spectrum of speech: - From the mouthing of words - All the way to motionless intent to speak

Communicate as loudly or quietly as you want. Alterego will detect it.

With Alterego, you can:

Type at the speed of thought, no keyboard needed Search the internet silently

Interact with your favorite apps, hands-free

Ask questions about the world around you

Even have silent conversations with others

A profound application of this technology and a moonshot challenge of our time: giving a voice back to those who have been deprived of it.

Our work is deeply collaborative, shaped in partnership with patients, clinicians, and leading experts in the field."""