Thumbumper

Thumbumper is a minimalist device for touch screen D-pads that enhances your gaming experience by guiding your thumbs from sliding off the controls in the middle of the action. It works on any smartphone or other mobile device that uses a capacitive touch screen, regardless of manufacturer or operating system. It's made to fit all of your favorite games and apps—but unlike a joystick, it's as mobile as you are. Currently available in three sizes and six colors. Thumbumper is shipped with a a small plastic card, perfect for storing it when not in use. Patent Pending.