How do master keys work?

Question

How do master keys work?

In: 2

Answer 1

A lock system with master keys has multiple ways to code the lock. Most have a pin set up in the lock core. If you have a master key system there will be 2 pins in the core allowing you to have multiple ways to create the lock. This allows you to have different keys that can all open the same door. A master key set up will use simple math so that 1 key can open all the doors. You can then have keys that are “area” masters and keys that can only open 1 door.

Basically it comes down to how the lock is pinned and how the keys are made.