The One-button phone app is another way to use your smartphone for your daily basic communication features : call-log, SMS; contacts…This app is specially designed to be used in motion-impaired situations. For instance, you can browse the entire app with only the headset media-button!Or you can use the smartphone’s touchscreen as a switch by capturing taps no matter where on the screen. The app captures regular finger taps and can only capture any screen touch for instance with palm or arm.