master keys
All-access lock tools
Master keys are keys designed to open multiple locks, each of which also has its own individual key.
Buildings use master key systems so maintenance staff can access all rooms while tenants access only their own.
Figuratively, a master key is anything that unlocks many possibilities: Education is the master key to success.
In computing, a master key is a cryptographic key from which other keys are derived.
- passkeyUniversal access tool
- openersThings that begin
- lockpicksLock-opening implements
- unlockOpen a secured closure
- padlocksPortable keyed fasteners
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