AppTag Laser Blaster
What can't smartphones do? Mark laser tag off the list. The AppTag Laser Blaster ($35) promises to turn your phone (or iPod touch, we suppose) into a laser tag gun/shooter that works via IR and high frequency sound to let app developers create nearly any kind of multiplayer shooting game you can imagine, all without needing to block the headphone port or eat away battery via Bluetooth or Wi-Fi. Six buttons — including a pressure sensitive trigger and a oversized reload switch — enable plenty of real-world interaction, and compatibility with most Nerf and Buzzbee toy guns serves as icing on the geek-flavored cake.