Access control replaces a mechanical key with a credential that can be revoked, time-limited and recorded. Accurate Security & Lock designs, installs and services keypad, fob and card systems for commercial premises across Northern Illinois and Southern Wisconsin, from a single coded door to a networked system with an audit trail.
A mechanical key cannot be revoked, cannot be audited and cannot be time-limited. An access control system can do all three, which is why the decision to fit one is really a decision about which of those three problems you need to fix.
We design, install and service keypad, proximity fob and card-based systems for commercial premises across Northern Illinois and Southern Wisconsin, from a single door with a code lock to a multi-door system with time zones, holiday schedules and a managed credential database.
| Requirement | Mechanical key | Access control |
|---|---|---|
| A departed employee still has a key | Rekey every door they touched | Delete their credential immediately |
| A cleaner needs access twice a week | Cut a key and hope | Time zone limited to those hours |
| Something went missing overnight | No record exists | Door-by-door audit trail |
| A contractor needs one door for a week | A key for every door | One credential, one door, expiring Friday |
| Keys keep getting copied | Impossible to detect | Credentials are issued, not cut |
What access control solves that a key cannot
A mechanical key does three things badly: it cannot be revoked, it cannot be time-limited, and it leaves no record. Every access control decision is really about which of those three you need to fix, and the answer decides how much system you need.
Related:Wikipedia: access control
Choosing the right system for the door
Most bad access control installations are over-specified, under-designed, or both. The hardware should follow from the door, not from a catalog.
- Standalone locks: a keypad or fob lock with no network. Right for one or two doors where nobody needs a report. Cheap, quick, no wiring. The limitation is that a code is still shared and changed rarely, so it solves convenience rather than accountability.
- Wired, networked systems: readers on a controller with software behind them. This is what time zones, holiday schedules, anti-passback and an audit trail require. It costs more because the wiring and the commissioning are the job, and the readers are the cheap part.
- Electronic strikes: the strike replaces the existing strike plate and the original latch holds the door, so the mechanical key still works as a fallback.
- Maglocks: the door is held by magnetism and releases on power loss. Faster to fit, and much easier to get wrong on a fire door.
The life-safety rules that cannot be negotiated
This is where access control stops being a convenience product. A door that people cannot get out of is a fatality waiting for a fire.
Access control touches life safety, so we install to code rather than to convenience. Code requirements are Illinois-specific on Illinois projects and differ by state, so the applicable rules are confirmed for each site before hardware is ordered.
- Free egress always wins. Every door must release from the inside with a single motion and no credential. A reader on the exit side of a perimeter door is a defect, not a feature.
- Fail-safe versus fail-secure is chosen per door. Life-safety doors release when power fails; secure perimeter doors stay locked and run from battery backup. This is decided door by door, in writing.
- Request-to-exit matters. A push button or motion sensor on the inside prevents the alarm-bypass habits that develop when legitimate exits trigger alerts.
- A fire door is never compromised. If a door is part of a rated assembly, the hardware must be listed for it. We will refuse a fitting that invalidates the rating.
Adding access control to doors that already have locks
Usually yes. In most cases we keep the existing lock body and add an electric strike or a credential reader, which preserves the mechanical key as a fallback and keeps the modification to the door minimal.
The preferred method is an electric strike rather than a maglock. A strike replaces the existing strike plate, so the original latch keeps working and the door itself is barely touched. Frames that are glass, unusually narrow, or badly out of square may need a different approach, which we identify on site before quoting.
Related:A keypad and electric strike installed at Dura-Bar in Woodstock
Why most access control installations disappoint
Access control failures are rarely caused by the hardware. They are designed in.
- The propped door. If the system makes a door slower to use than propping it, it will be propped. That is a design failure, not a discipline problem. The fix is a closer that actually works, a request-to-exit device, and hardware that opens easily.
- Shared codes. The moment a code is shared, accountability is gone and you are back to a mechanical key with extra steps. Issue one credential per person and delete it when they leave, which is the entire point.
- Over-specification. Plenty of enquiries are really a hardware problem. If one door needs controlling, a keypad lock or a restricted keyway may do everything you need for a fraction of the cost, and we will say so.
What you should receive at handover
An undocumented system is unmaintainable. As-built notes are what allow the system to be extended, audited or repaired by someone other than the installer.
- What was installed, described door by door.
- How each door is programmed, including time zones and holiday schedules.
- Which doors are fail-safe and which are fail-secure, in writing.
- How to add or remove a credential without calling anyone.
Working with the wiring you already have
Existing wiring is reused wherever it is sound, which is often the difference between a modest upgrade and a disruptive refit. Electric strikes, maglocks and request-to-exit devices are matched to the door and frame rather than to a catalog, and the survey establishes what the existing cabling and power will actually support.
Repairing and taking over an existing system
We service and repair existing installations, including inherited systems with no documentation. Repairs are quoted after diagnosis, and we will tell you plainly if a system has reached the point where repair costs more than it is worth.
Taking over an undocumented system starts with mapping what is there: which doors are controlled, how credentials are issued, which doors are fail-safe, and where the original installation departed from the design.
How an access control job is scoped
Before quoting we walk the site and establish which doors genuinely need control, which are fire exits and therefore governed by code, and where a reader will be defeated by a propped door or a shared code within two weeks. That survey is what separates a system people use from one they work around.
Service areas for access control systems
We cover every town on our list across Northern Illinois and Southern Wisconsin. These are a few of them.
- Access Control Systems in Barrington Hills, IL
- Access Control Systems in Burlington, WI
- Access Control Systems in Campton Hills, IL
- Access Control Systems in Carpentersville, IL
- Access Control Systems in Cary, IL
- Access Control Systems in Crystal Lake, IL
Frequently asked questions
Can you add access control to doors that already have locks?
Usually yes. In most cases we keep the existing lock body and add an electric strike or a credential reader, which preserves the mechanical key as a fallback and keeps the modification minimal. Doors with unusual frames or glass stiles may need a different approach, which we will identify on site.
What happens to access control during a power cut?
Fail-safe and fail-secure behavior is chosen deliberately per door, not by default. Life-safety doors release on power loss; secure perimeter doors stay locked and run from battery backup. We agree which doors fall into which category with you before installation.
Do you repair systems another company installed?
Frequently. We service and repair existing installations, including inherited systems with no documentation. Repairs are quoted after diagnosis, and we will tell you plainly if a system has reached the point where repair costs more than it is worth.
Will the original mechanical key still work after access control is fitted?
Usually yes, and the preferred method is an electric strike rather than a maglock. A strike replaces the existing strike plate, so the original latch and mechanical key keep working as a fallback and the modification to the door is minimal. Frames that are glass, unusually narrow, or badly out of square may need a different approach, which we identify on site before quoting.