Just click on the large register button at the top of this page to begin the process. (drivertrainingassociates.com)
I've accidentally fallen of stage way too many times through no fault of my own, but because the game couldn't register my button press through the lag. (wizarddojo.com)
This translates the pressure to a piece of carbon that makes contact with the circuit board and registers a button press. (gamingtrend.com)