This video really amazed me. I did not know you could make a motion sensor to put on your hand from four little parts of a computer mice. Its cool how he took pictures just by making that camera gesture with his hands. I like how if your lost you can just pull up a map on a wall and find out where you are. Bringing in real life objects into it too is very amazing, But bad things may be used with this too. People could more easily disrupt others and these devices may be used to find out who people are and could get information from you.