Another option when considering individual responding.

The Blue2 FT Bluetooth switch provides single or dual switch access to iDevices running iOS 7, Apple desktop or laptop computers running OS X Mavericks, and all switch accessible apps or software on iOS, OS X, Windows, and Android! Blue2 connects to your favorite device via a Bluetooth connection that is easy and quick to set up. New features include an improved switch activation surface that takes 40-percent less pressure to activate, multiple modes of operation for compatibility to all apps, a long-lasting rechargeable battery, and a sleek, modern design.