Keep in mind that when you receive a new message, inPulse vibrates and the messages pops up automatically on screen...you don't even need to press anything. We

Keep in mind that when you receive a new message, inPulse vibrates and the messages pops up automatically on screen...you don't even need to press anything. We designed inPulse to be useful in the 1-to-10 second timeframe. We knew that if it got too complicated or required too much fiddling, people would just pull out their cellphone. With one button, you can navigate with gloves, when your hands are wet, under the table...etc. That's why it has one button.