“Audio ‘fingerprint’ for content-relevant ads”
The Register reports:

The first thing that came out of our mouths when we heard that Google is working on a system that listens to what’s on your TV playing in the background, and then serves you relevant adverts, was “that’s cool, but dangerous”.

… The idea is to use the existing PC microphone to listen to whatever is heard in the background, be it music, your phone going off or the TV turned down. The PC then identifies it, using fingerprinting, and then shows you relevant content, whether that’s adverts or search results, or a chat room on the subject.

… Google says that its fingerprinting technology makes it impossible for the company (or anyone else) to eavesdrop on other sounds in the room, such as personal conversations, because the conversion to a fingerprint is made on the PC, and a fingerprint can’t be reversed, as it’s only an identity.

But we should think that “spyware” might take on an extra meaning if someone less scrupulous decided on a similar piece of software.

[The Register: Link]

Thanks, Geoff.