# Subvocal smart glasses

Subvocal has moved silent speech input from face-taped electrodes to radio sensing: its glasses emit Bluetooth-like radio waves through the face, and silent mouthing of the tongue, lips and soft palate modulates them before foundation models decode the perturbations into text. The team says the electrode route suffered from sweat, electrical interference and placement variability, and that cross-user performance improved mainly by scaling pretraining data, with a demo user needing only a short 20-sentence calibration.

Subvocal has moved silent speech input from face-taped electrodes to radio sensing: its glasses emit Bluetooth-like radio waves through the face, and silent mouthing of the tongue, lips and soft palate modulates them before foundation models decode the perturbations into text. The team says the electrode route suffered from sweat, electrical interference and placement variability, and that cross-user performance improved mainly by scaling pretraining data, with a demo user needing only a short 20-sentence calibration.