CONCEAL

Conceal proposes a third stance beyond surveillance (watching from above) and sousveillance (watching from below): deveillance — opting out of being watched at all. It gives you control over when your voice can and can’t be captured.

The device emits ultrasonic tones around 25kHz — above the 20Hz–20kHz range of human hearing, but inside the range a microphone diaphragm picks up. To you the room is silent; to any nearby recorder, your speech is jammed into noise. Built in tabletop, small-tabletop, and wearable (necklace and clip) forms.