The reflections in your eyes in photos may reveal more than you think.

A man who attacked a pop star in Japan reportedly managed to find out where she lived by studying the reflections in her eyes in photos she posted to social media. The attacker observed a train station reflected in her eyes, found that train station using Google Street View, waited for her at the train station, and followed her home. (The eye above is mine but you won't find a reflection that will let you track my whereabouts)

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