3.5M
GAThe AlterEgo AI device is a wearable that aims to let you “talk” to machines without ever vocalizing, by detecting the subtle neuromuscular activity in your jaw, throat, and face that happens when you silently mouth or internally intend speech. It doesn’t read raw thoughts or brain waves, but rather picks up on the signals that would normally lead to speech before sound comes out. 
In practice, AlterEgo includes sensors (electrodes) placed around the jawline and related muscle areas that monitor electrical signals. Those signals are processed by machine-learning models that decode what those signals mean (which words you’re silently forming) and turn them into commands, text, or interaction with an AI assistant. Output to the user comes through bone-conduction audio, so you can hear responses without using conventional speakers. 
The company emphasizes that this is a non-invasive way to communicate, and positions it as particularly useful for situations where speaking aloud is impossible, impractical, or undesirable—crowded spaces, noisy environments, or for people who have difficulty speaking. It builds on earlier research from MIT Media Lab, where similar “silent speech” or subvocalization interfaces were developed experimentally. 
One key claim is speed and privacy — since you are not speaking out loud, the communication is both more discrete and, potentially, faster (because you’re not waiting to articulate or project sound). As of the latest reports, the device is still more of a prototype / startup product rather than something widely available.
Credit: Alterego
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