AppTag Laser Blaster from Jon Atherton on Vimeo.
AppTag Laser Blaster brings first person shooter console gameplay to smartphones in the real world. Obviously, as with any blaster toy, the object is to shoot your friends! The AppTag does the shooting and the smartphone keeps score and tracks everything else, the App even adds Augmented Reality objects such as medkits, armour, weapons and ammo packs!
For targeting we use a focused infrared beam and sensor for the 'laser' so it's totally safe. Each unit has an IR sender and receiver, and the AppTag unit works together with an attached smartphone or iPod Touch.