A keycard lock is a lock operated by a keycard, a flat, rectangular plastic card with identical dimensions to that of a credit card or American and EU driver's license which stores a physical or digital signature which the door mechanism accepts before disengaging the lock.
There are several popular type of keycards in use including the mechanical holecard, bar code, magnetic stripe, Wiegand wire embedded cards, smart card (embedded with a read/write electronic microchip), and RFID proximity cards.
Keycards are frequently used in hotels as an alternative to mechanical keys.
The first commercial use of key cards was at automated parking lots to raise and lower the gate where users paid a monthly fee.
Famous quotes containing the word lock:
“and wife or husband
who does not lock the door of the marriage
against you, finds you
not as unwelcome third in the room, but as
the light of the moon on flesh and hair.”
—Denise Levertov (b. 1923)