The Bluetooth Super-Switch 5" diameter makes a great target for those that need it and it's built-in switch interface can work with any switch(es) for "Auto" or "Step" scanning. It can be used to snap pictures in the Camera App, Play/Pause (and Next-Song with a second switch) in the Music App, and even to turn the page in some e-book apps (like iBooks and others). It works by Bluetooth 2.1 for simple pairing and range of over 50 ft. Any app that has been programmed for switch access can use my iPad Super Switch.