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> The Wi-Fi radio runs on extremely low power by transmitting data via a technique called backscattering. It takes incoming Wi-Fi signals from a nearby device (
by garmaine 7y ago
> The Wi-Fi radio runs on extremely low power by transmitting data via a technique called backscattering. It takes incoming Wi-Fi signals from a nearby device (like a smartphone) or Wi-Fi access point, modifies the signals and encodes its own data onto them, and then reflects the new signals onto a different Wi-Fi channel to another device or access point.
Seems like this chip is purpose built for surreptitious surveillance.
- lancepioch 7y agoIt looks like it completely depends on there being other types of radio waves and modifying them. If you were security conscious you could either check if radio signals were being modified somehow or just shield off certain rooms (faraday cage).