Lamphone: Eavesdrop on a Hanging Lightbulb | TWiT Bits

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English - June 17, 2020 03:44 - 24 minutes - 256 MB Video - ★★★★ - 9 ratings
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"Lamphone" is a novel side-channel attack that can be applied by eavesdroppers to recover sound from a room that contains [an exposed] hanging lightbulb. Lamphone recovers sound optically via an electro-optical sensor which is directed at a hanging bulb; such bulbs vibrate due to air pressure fluctuations which occur naturally when soundwaves hit the hanging bulb's surface.

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