This bus stop ad, recently erected in Hamburg, , changes whether or not someone's looking at it. Using a built-in camera with eye-tracking , it can tell exactly when someone is checking it out.

It uses this to get across an anti-domestic abuse message. When no one is looking, it shows a man hitting his wife. But when you look right at it, it changes to a picture of the couple looking happy and normal.

A cool piece of tech used to powerful effect.

Coloribus Via Dvice

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