"Master keys" are actually part of a much larger hierarchal system of keying. Master keys can be "Grand" or "Great Grand" (like grandpas) depending on how many lower key systems they can unlock.

Let Me Google That

Let Me Google That

How Master Keys Work

DEC 8, 202412 MIN
Let Me Google That

How Master Keys Work

DEC 8, 202412 MIN

Description

"Master keys" are actually part of a much larger hierarchal system of keying. Master keys can be "Grand" or "Great Grand" (like grandpas) depending on how many lower key systems they can unlock.