Access Control Systems

Most sites already have a lock, a guard and a register book. None of those tell you who opened the server room at 2 a.m. last Tuesday, or stop a resigned employee from walking back in with a key that was never returned.

Every installation, large or small, is built from the same five parts. Understanding them makes it much easier to judge a quotation.

1. The credential — what the person presents: an RFID card, a fingerprint, a face, a PIN or a mobile credential.
2. The reader — the device that reads it, mounted beside the door or in the turnstile.
3. The controller — the panel that decides whether to unlock. On serious installations this sits in a secure room, not on the unsecured side of the door.
4. The locking device — electromagnetic lock, electric strike, drop bolt, turnstile mechanism or gate motor.
5. The software — where you create users, set time zones and access levels, and pull reports.

High-security doors normally use two factors, for example card plus fingerprint. For most offices, a single factor at the perimeter and two factors on server rooms and cash rooms is the right balance.

A door reader controls access. A turnstile enforces it, by physically allowing one person through per valid credential. This is what stops tailgating, and it is why turnstiles are standard at factories, offices and campuses where headcount must be accurate.

• Tripod turnstiles — the most economical option, ideal for factory and staff entrances with high throughput
• Flap barriers — faster and smoother, suited to corporate lobbies and offices
• Speed gates — wide, glass-wing units for premium receptions, with sensors that detect tailgating
• Full-height turnstiles — cage units for unmanned perimeters, stadiums and industrial boundaries
• Swing gates — wide lanes for wheelchair access, trolleys and deliveries, always installed beside a turnstile lane

Access control works best when it is not an island. On most of our installations the same credential is used across:

• Doors and turnstiles for entry to the building and restricted areas
• Vehicle gates via long-range RFID readers and automatic road barriers
• Attendance, so the same punch feeds payroll through our biometric attendance devices and HRIS and payroll software
• Visitors, through our visitor management system, which issues a temporary credential valid only for the area and time approved
• CCTV, so that every access event has a matching camera snapshot

• Access levels: which person may open which door, and when
• Time zones: office hours, shift patterns, weekends and holidays
• Anti-passback: a credential cannot be used to enter twice without exiting, which stops card-passing
• Interlock: two doors that cannot be open at the same time, used for cash rooms and clean rooms
• Muster and roll-call reports: who is inside the building right now, printable at an assembly point
• Audit trail: every grant, every denial, every door-forced and door-held alarm, with date, time and user
• Instant revocation: a leaver's access is cancelled in seconds, across every door

An access control system must never trap people inside. Every installation we do includes a break-glass emergency release on the exit side of controlled doors, fail-safe locks on designated escape routes so they release when power is cut, and an interface to the fire alarm system that drops the locks on alarm. Turnstile arms drop to a free-rotation state on fire signal. We treat this as a non-negotiable part of the design, not an option.

• Corporate offices and head offices
• Factories, mills and industrial units with shift-based workforces
• Hospitals and laboratories, including restricted wards and pharmacies
• Universities, colleges and schools
• Banks, cash rooms and data centres
• Housing societies and gated communities
• Warehouses, logistics hubs and cold storage

1. Survey: we walk every door and gate, record leaf type, frame material, power availability and cable routes.
2. Design: door schedule listing lock type, reader, controller, power supply and emergency release for each opening.
3. Supply: hardware from established brands including ZKTeco and Hikvision, chosen to match the environment.
4. Installation: containment, cabling, controllers in secure positions, locks aligned and tested under load.
5. Training and handover: administrators trained on enrolment, revocation and reporting, with documentation.
6. Support: maintenance contracts, spare readers and locks, and remote assistance for software issues.