Access control decides who can go where, and when, and it removes the oldest security weakness of all: the mechanical key. Keys get copied, lost and never handed back, and a single lost key can mean re-cutting locks across a whole building. A modern access control system removes that problem and gives you a record of every door event. Here is how the options compare.
The credential: how people get through the door
The credential is whatever a person presents to be let in. The common choices are:
- Fobs and cards are familiar, inexpensive and easy to issue or cancel, which suits most general commercial use.
- PIN codes need no hardware to carry, but codes get shared, so they suit lower-risk doors or work best combined with a card.
- Mobile credentials put the key on the user’s phone. They are convenient, quick to issue remotely, and harder to pass around or clone.
- Biometrics, such as fingerprint or facial recognition, suit high-security doors where you must be certain exactly who entered.
What a good system gives you beyond the lock
The real value of access control is management and visibility. You can grant a contractor access for a single day, revoke a leaver’s access in seconds, restrict certain doors to certain hours, and pull an audit trail of exactly who went where. On a site with several buildings, all of that can be managed from one place.
Wired or wireless?
Traditional wired door controllers are robust and well suited to main entrances and high-traffic doors. Wireless and battery-powered locks are far less disruptive to install and make sense for internal doors, retrofits and listed buildings. Most real-world systems use a sensible mix of both.
Plan for safety and the fire strategy
Access control must never compromise escape. Doors on escape routes need fail-safe hardware and must integrate correctly with the fire alarm so they release automatically. This is a point worth getting right at the design stage, not after installation. If you are weighing up access control for your premises, request a site survey and we will recommend the right mix of doors, credentials and hardware.