For those that may not have thought about this.
A simple thing to do and increase your security.
Dust, Wipe, and maybe polish your keypad surfaces.
If you get an uninvited intruder/s, they may simply look closely at your keypad.
If your passcode is for example,,, a six digit code, when they look closely they may see that only 6 pads have been regularly used.
This will straight away give them only 6 pads to play with alternately to possibly open your safe.
Much less than the umpteen gazillion options if they don't know which pads are usually used.
So Dust, or Wipe, and maybe occasionally polish your keypad for added security.