Nowadays there are so unique alternative way for enjoy the game of smartphone devices. You can try Xappr, accessories that will turn your smartphone into a laser gun. Or you want a more simple like this one?
One of the things that can not be obtained from most smartphones when playing games is the joystick. Although a variety of additional accessories available, but it is more appropriate accessories for tablet. Use on smaller devices like the iPhone the size of 3.5 inches would be a hassle.
A number of teams at Keio University have developed a solution to this problem. 3-Axis-called analog joystick, elastic devices placed around the front facing camera of the smartphone. Elastic device is equipped with a small marker that can trace through the camera and with this sign, the smartphone can record the movements as input for game.
Using this accessory will allow the player to have a physical joystick, which is certainly better than the virtual onscreen. They also do not have to worry about tarnishing screen smartphone with a greasy or dirty thumb. This joystick can also be placed on the rear camera for the same function, except that the player will control it in other ways. Cool, is not it? Check out the video directly and give us your comments 
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