The Microsoft SecondLight device is seriously cool…it’s like the Surface…but even better!
It’s quite hard to explain in words what it does without making it sound rubbish and/or pointless. It can display one image on the table and then another image through that which is viewable through paper placed on the table..if that doesn’t make sense, I’m sorry…but the picture below show’s what I mean. The Surface is displaying the pic of the car and then you can also see the blueprint..
A cool video demo can be seen here (warning: Will open in Windows Media Player)