The mouse for you mobile phone is what these guys are calling their prototype. You place your camera on a base, show it a marker and it will follow you. Watch the cool video below. Now excuse me while I continue to slam the palm of my hand on my forehead.
Below is a link to the original webpage I found the product.
Satarii Star is an iPhone Dock That Rotates with the Action | CraziestGadgets.com
Thanks,
Beto