Choosing the Right Access Control System

What access control does

Access control replaces or supports keys with a reader at the door. Only people you have registered can open it, you can remove access instantly when someone leaves, and the system keeps a record of who entered and when.

Choosing a reader

PIN keypads are simple and low-cost, but codes are easily shared. Cards and key fobs are fast and easy to replace if lost. Fingerprint readers cannot be lent to someone else, but they work less well with dirty or worn fingers. Face recognition is touch-free and quick, and works well for busy entrances.

Many readers combine methods, for example card plus PIN for a server room or cash office.

Locks and door hardware

The reader controls a lock. Magnetic locks suit glass and aluminium doors, electric strikes suit wooden doors with an existing lock, and motor locks suit gates. Every system should have an exit button and an emergency release so people can always get out.

Power backup and attendance

Use a power supply with a battery backup so doors behave correctly during power cuts. Decide in advance whether each door should stay locked or unlock when power fails, based on fire safety.

Many fingerprint and face terminals also record staff attendance, which saves paperwork for offices, schools and factories.

• Choose the reader by security level and how busy the door is
• Match the lock type to the door material
• Always fit an exit button and emergency release
• Add battery backup for power cuts
• Use attendance features if you track staff time