Definition
An electronic system that controls who can open a door and when, using credentials like fobs, cards, codes, or phones — with a log of every entry. It replaces mechanical keys you can't track or revoke.
Why this term matters
In access control, terminology typically maps to who can enter, life-safety egress, and how a door behaves during a power outage.
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Related pages
Related terms
Maglock (magnetic lock) An electromagnet that holds a door shut while powered, releasing when power is c… Electric strike A powered door-frame plate that releases the latch to allow entry while keeping … Credential Whatever a person presents to unlock a door — a key fob, proximity card, PIN cod… Request-to-exit (REX) A motion sensor or button that signals the system someone is leaving, so the doo…
Discipline: Access Control