The biggest twist with Lockly can be found on the touchscreen. Rather than a static 10-key pad, Lockly organizes digits into groups: Four buttons appear on the lock, with three digits on each (some digits are repeated). The configuration of these buttons changes every time the keypad is used, so a button may show 418 on one use, then 792 on the next. To input a PIN, you press on the pad where the relevant digit appears—but this is always moving around every time you open the door.