master key

Examples (10)

• The janitor had a master key that opened every door in the building.
• They designed a complex lock system, but forgot about the master key.
• Each hotel room has its own unique key, but the manager carries a master key.
• Security protocols require that all master keys be kept in a secure safe.
• He was given a master key to access all restricted areas.
• The old mansion had dozens of locks, all opened by a single master key.
• If you lose your apartment key, the landlord can use the master key to let you in.
• The safe deposit boxes are individually locked, but there's always a master key for emergencies.
• Creating a master key for all offices simplifies access for authorized personnel.
• The security breach occurred because a master key was stolen.