Security News > 2017 > April > Stealing Browsing History Using Your Phone's Ambient Light Sensor (Schneier on Security)

There has been a flurry of research into using the various sensors on your phone to steal data in surprising ways. Here's another: using the phone's ambient light sensor to detect what's on the screen. It's a proof of concept, but the paper's general conclusions are correct: There is a lesson here that designing specifications and systems from a privacy...

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https://www.schneier.com/blog/archives/2017/04/stealing_browsi.html