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2. Keycard lock - Wikipedia

   en.wikipedia.org/wiki/Keycard_lock

   However, if the card readers communicate with a central system, it is the system that unlocks the door, not the card reader alone. [3] This allows for more control over the locks; for example, a specific card may only work on certain days of the week or time of day. Which locks can be opened by a card can be changed at any time.

3. Proximity card - Wikipedia

   en.wikipedia.org/wiki/Proximity_card

   A passive proximity card for door access. A proximity card controlled turnstile A passive proximity card with the plastic casing opened to show components: antenna coil and integrated circuit (black object bottom center) Anatomy of proximity card: coil and IC The proximity card coil of an electronic fare collection system

4. Access badge - Wikipedia

   en.wikipedia.org/wiki/Access_badge

   The access badge contains a number that is read by a card reader. This number is usually called the facility code and is programmed by the administrator. The number is sent to an access control system, a computer system that makes access control decisions based on information about the credential. If the credential is included in an access ...

5. Access control - Wikipedia

   en.wikipedia.org/wiki/Access_control

   Common physical security access control with a finger print A sailor checks an identification card (ID) before allowing a vehicle to enter a military installation.. In physical security and information security, access control (AC) is the selective restriction of access to a place or other resource, while access management describes the process.

6. Smart lock - Wikipedia

   en.wikipedia.org/wiki/Smart_lock

   A smart lock is an electromechanical lock that is designed to perform locking and unlocking operations on a door when it receives a prompt via an electronic keypad, biometric sensor, access card, Bluetooth, or Wi-FI from a registered mobile device. These locks are called smart locks because they use advanced technology and Internet ...

7. Door security - Wikipedia

   en.wikipedia.org/wiki/Door_security

   A metal doorframe with a strike plate built in: in other doors this would be a metal strikeplate in a wooden doorframe. The term door security or door security gate may refer to any of a range of measures used to strengthen doors against door breaching, ram-raiding and lock picking, and prevent crimes such as burglary and home invasions. Door ...