this is not the latest news, but it is still worth a mention.
Ads in bus stops in Hamburg, Germany were erected that change their content when someone is looking at them.
a built-in camera with eye-tracking technology can tell exactly when someone is checking it out and changes the content.
The Ad is 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.
Pretty cool and effective.