In the video I am pressing three numbers simultaneously and pulling the WallHolster out and retrieving my handgun in a couple of seconds. What you don't see is the #6 button with a red hash mark was first rotated to the proper position. Its like a safety. Its an extra layer of security that you can select when ordering.
You can order a WallHolster with a simple code that is for instant release or a more complicated code to foil pin-code manipulation. It your call! As for the location; use your imagination! A closet wall, side of a bed, under a drawer, in a drawer, in a Pelican case, in a car trunk or attached to the driver seat, in your RV and so on. The WallHolster provides a safe place to park and lock your handgun.