See through walls with Google Glass, Google's new wearable computer with heads up display!
There's a video demo of this app here:
http://www.youtube.com/watch?v=vsg5GHjhSwQ
And a blog write up here:
http://neatocode.tumblr.com/post/50845092661/throughthewalls-open-source-glass-ar-app-wins-ericsson