Facebook patents a system that can use your phone’s microphone to monitor TV habits …& ambient sound

An audio fingerprint embedded in TV shows or ads, inaudible to human ears, would trigger the phone to turn on the microphone and record. The recording could be used to map TV watching, so as to target advertising better, or more.

Allen Lo, head of intellectual property at Facebook: “It is common practice to file patents to prevent aggression from other companies. Because of this, patents tend to focus on future-looking technology that is often speculative in nature and could be commercialised by other companies. The technology in this patent has not been included in any of our products, and never will be.”

So, once again: trust us, we would never let you down, would we…..

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