How to Choose the Right Access Control System
What Is an Access Control System?
An access control system manages who can enter or exit a building, room, or area - and when. Rather than relying on physical keys, these systems use electronic credentials such as PIN codes, key cards, fobs, or biometrics to authenticate users and operate door locks.
For businesses and larger residential properties, access control offers significant advantages over traditional keys: credentials can be issued and revoked instantly, entry logs provide an audit trail, and there is no risk of a lost key compromising the entire building.
Types of Access Control Systems
Discretionary Access Control (DAC)
The property owner determines who can access each resource. This is the most flexible model and is suitable for small businesses where the owner manages access permissions directly.
Mandatory Access Control (MAC)
Access is determined by formal security classifications - common in government and high-security environments. Users cannot grant access to others beyond what their own classification allows.
Role-Based Access Control (RBAC)
Access rights are assigned according to a user’s role within an organisation. A receptionist might access public areas and meeting rooms; a finance manager might also access the accounts office. RBAC is the most practical model for most businesses.
Attribute-Based Access Control (ABAC)
A highly flexible approach that grants access based on multiple attributes simultaneously - for example, an employee’s role, the time of day, and their location. Suited to complex enterprise environments.
Key Factors to Consider
1. Identify Your Security Requirements
Begin with honest answers to these questions:
- What are the realistic threats to your property?
- Which areas require restricted access and to how many people?
- Are there regulatory or insurance requirements you must meet?
- How often do staff or occupants change?
This will determine both the complexity of system you need and the authentication methods that make sense.
2. Authentication Methods
The way users prove their identity significantly affects both security and daily convenience:
| Method | Security Level | Convenience | Cost |
|---|---|---|---|
| PIN keypad | Moderate | High | Low |
| Key card / fob | Good | High | Low-Medium |
| Fingerprint scanner | High | Medium | Medium |
| Facial recognition | Very high | High | High |
| Multi-factor (card + PIN) | Very high | Moderate | Medium-High |
For most businesses, a key card or fob system offers a good balance of security and usability. Multi-factor authentication is worth the added complexity for server rooms, pharmaceutical stores, or areas holding sensitive data.
3. Integration With Existing Security
A modern access control system should work alongside - not in isolation from - your other security measures. Consider whether it can integrate with:
- CCTV and video intercom systems
- Intruder alarms
- Fire alarm and emergency egress systems (critical - access control must not impede emergency exit)
- HR or visitor management software
4. Scalability
Choose a system that can grow with your business. Adding users, doors, and access points should be straightforward without requiring a full system replacement.
5. Remote Management
Cloud-based access control platforms allow you to manage permissions, view entry logs, and lock or unlock doors from any internet-connected device. This is particularly valuable for businesses with multiple sites or those that need to grant temporary access to contractors or visitors.
6. Total Cost of Ownership
Look beyond the initial purchase price and factor in:
- Hardware - readers, control panels, electric strikes or magnetic locks, credentials
- Software - licences, cloud subscriptions, mobile app access
- Installation - complex multi-door systems require professional cabling and configuration
- Ongoing maintenance - firmware updates, battery replacements, annual servicing
For a tailored quote based on your property, contact us.
Selecting a Supplier
Reputation and Track Record
Ask for case studies or references from similar-sized businesses in your sector. A supplier who has installed systems in comparable environments will understand your requirements better.
Technical Support
Access control failures can lock people out or create security vulnerabilities. Ensure your supplier offers responsive technical support and has clear escalation procedures for urgent issues.
Warranties and Service Agreements
A reputable supplier will provide a hardware warranty and offer maintenance contracts to keep the system performing reliably over its lifespan.
Professional Installation Matters
Even the best access control hardware is only as effective as its installation. Incorrectly wired or configured systems can fail silently, leaving doors unsecured without any visible indication. City Locksmith London provides professional installation and configuration of access control systems for businesses and residential properties across London.
See our full range of locksmith services or get in touch to discuss your requirements.