Use your Android device and any app with one or two switches. IMPORTANT: THIS APP ONLY WORKS WHEN MOUSE4ALL BOX OR MOUSE4ALL GO CONNECTED TO THE ANDROID DEVICE. Purchase Mouse4all Box: Link https://mouse4all.com/en/buy/mouse4all-box Purchase Mouse4all Go: Link https://bjliveat.com/switch-based-access/767-usb-switch-interface-2.html Designed for persons that cannot use a touch screen with their hands (cerebral palsy, multiple sclerosis, Parkinson, spinal cord injury, ALS). With Mouse4all B