A keycard with a magnetic stripeWiegand cardsSince the keycode is permanently set into the card at manufacture by the positions of magnetic wires, Wiegand cards can't be erased by magnetic fields or reprogrammed as magnetic stripe cards can. The key could easily be changed for each new guest by inserting a new key template in the lock that matched the new key.In the early 1980s, the key card lock was electrified with LEDs that detected the holes. There were 32 positions for possible hole locations, giving approximately 4.3 billion different keys. This was a mechanical type of lock operated by a plastic key card with a pattern of holes. Keycards may also serve as ID cards.Many electronic access control locks use a Wiegand interface to connect the card swipe mechanism to the rest of the electronic entry system.Newer keycard systems use radio-frequency identification (RFID) technology such as the TLJ infinity.Types of card readers A mechanical keycard, with 'bumps' that operate pins inside of the lock (similar to a pin tumbler lock)MechanicalMechanical keycard locks employ detainers which must be arranged in pre-selected positions by the key before the bolt will move. The card stores a physical or digital pattern that the door mechanism accepts before disengaging the lock.There are several common types of keycards in use, including the mechanical holecard, barcode, 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 to raise and lower the gate at automated parking lots where users paid a monthly fee.Contents1 Overview2 Types of card readers2.1 Mechanical2.2 Wiegand cards2.3 Magnetic stripe2.4 Passive RFID3 Access control4 Privacy5 Gallery6 See also7 ReferencesOverviewKeycard systems operate by physically moving detainers in the locking mechanism with the insertion of the card, by shining LEDs through a pattern of holes in the card and detecting the result, by swiping or inserting a magnetic stripe card, or in the case of RFID cards, merely being brought into close proximity to a sensor. JSTOR (December 2009) (Learn how and when to remove this template message)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.Unsourced material may be challenged and removed.Find sources: 'Keycard lock' – news Please help improve this article by adding citations to reliable sources.
Usb card reader writer yx rwc01 b free#
From Wikipedia, the free encyclopedia Jump to navigation Jump to search This article needs additional citations for verification.
0 kommentar(er)
