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Definition: Alexagate

A cover for Amazon Echo devices from MSCHF that prevents them from "listening." Alexagate is like a hat for the Echo and jams its microphone with ultrasound pulses until people clap three times or tap the unit three times. Alexagate works on the Echo cylinder devices and the Echo Dot. See Amazon Echo.

Alexagate on an Echo Spot
The unit fits easily over regular Echo devices as well as the Echo Dot. (Image courtesy of MSCHF, www.alexagate.com)