Your Guide to Door Entry and Access Control Terminology

Understanding Key Terms in Security

Navigating door entry and access control systems can feel like learning a new language. Whether you're a property owner, security installer, or simply curious about modern security, understanding the key terms can make a big difference. Here’s a straightforward glossary to help demystify the jargon and get you up to speed.

Glossary of Terms

Access Control

The selective restriction of access to a place, system, or resource.

Access Control List (ACL)

A list of permissions for an object that outlines who or what can access it.

Biometrics

Identification methods that use unique physical traits like fingerprints or iris scans—or behaviours, such as voice recognition, for authentication.

Card Reader

A device that reads access cards to authenticate a user before allowing entry.

CCTV (Closed-Circuit Television)

A surveillance system using cameras that transmit video to specific monitors for monitoring and recording purposes.

Electric Strike Lock

An electrically powered lock that works with a mechanical lock to control door security.

Egress

The act of exiting, often used in the context of emergency exits.

Fail-Safe

A feature that ensures a door unlocks automatically in case of power failure or system malfunction, prioritizing safe exit.

Fail-Secure

The opposite of Fail-Safe doors remain locked during a power failure, prioritising restricted access.

Fob

A small keyless entry device with built-in authentication, commonly used for access control.

IP Camera

A camera that transmits digital video over a network, commonly used for surveillance.

Maglock (Magnetic Lock)

A lock that uses electromagnetism to secure doors, often used in high-security or emergency exit areas.

Master Key

A key that can open multiple locks in a master-keyed system, typically held by a property manager or security officer.

Multi-Factor Authentication

A security method that requires multiple verification steps, such as a PIN and fingerprint, for access.

PIN (Personal Identification Number)

A numeric code used as a part of the verification process.

Proximity Sensor

A sensor that detects objects without physical contact, often used in card reader systems for access control.

Request-to-Exit (REX)

A device that detects a person’s intent to leave an area and unlocks the door.

RFID (Radio-Frequency Identification)

A technology that uses radio waves for data transfer, frequently seen in modern access control systems.

Tailgating

The act of closely following someone through a secured door, often without authorisation.

Two-Wire System

An installation requiring just two wires for power, data, and video, simplifying setup and reducing costs.

Video Intercom

A two-way communication device that supports both video and audio, often used in residential buildings or offices for visitor verification.

Vandal-Resistant

Materials or devices specifically designed to resist intentional damage.

Final Thoughts

Knowing these terms can help you make informed decisions and communicate effectively about door entry and access control systems.

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