Quote:
Originally Posted by vintageogauge
How many combinations are there when using 4 digits? He did not know exactly what the code was and no need to keep them clean.
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With 4 known keys of unknown order there are 24 possible codes. Most keypads lock you out for 30 to 60 seconds after entering a wrong code. I just checked my keypad (now 10 years old) and I cannot discern any difference on the keys. Not sure this is a real issue but it can't hurt to clean the keys as long as you do not get any liquid inside the device.