the light bulbs have ears

No, this isn’t about hacking “smart bulb” IoT devices. Rather it is about a relatively low cost way of performing audio surveillance via old fashioned light bulbs. Termed “Lamphone – real time passive sound recovery,” the technique uses a $400 electro-optical sensor and a laptop to “read” vibrations on a light bulb in the vicinity of a sound source. The work will be presented at Black Hat 2020. It is a mix of high-tech with a bit of Get Smart mixed in. It is apparent that blockchain isn’t going to solve all security issues…

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