They’re great because they don’t get damaged as easily as normal contact switches (such as from moisture or dust), but they lack the tactile response of a physical button.
So we used our Haptic Feedback Evaluation Kit to develop a simple passcode system. Using 3 piezo sensors the user is required to enter a 4 digit passcode, and the kit provides the tactile stimulation on button presses and also plays different effects for the user entering the wrong code or the correct code!
Quick quiz: is the system more secure with an additional sensor or a 5 digit code?! You can read the full guide by following this link: