Commercial Access Control
Access Control Systems for Businesses: Cards, Keypads, and Biometrics Compared
Updated April 2026 | By Berkley Security Inc. | 8 min read
Quick Answer:
Access control replaces keys with cards, codes, or biometrics and logs every entry with who, where, and when. #1 advantage: instantly revoke access when employees leave (no rekeying). Systems start at $500/door for keypads, $1,500+ for multi-door card systems. Integrates with your alarm system for unified management.
If your business still uses traditional keys, you have a security gap. You do not know who has copies, you cannot track who enters after hours, and when an employee leaves, you face the cost and hassle of rekeying locks. Access control solves every one of these problems.
3 Types of Access Control Compared
| Feature | Keypad (Code) | Card Reader | Biometric |
|---|---|---|---|
| Cost per door | $500-$1,000 | $800-$2,000 | $1,500-$4,000 |
| Individual tracking | Limited (codes can be shared) | Yes (one card per person) | Yes (unique biometric) |
| Cannot be shared | No | Rarely | Impossible |
| Instant deactivation | Yes (change code) | Yes (deactivate card) | Yes (remove biometric) |
| Ease of use | Simple | Tap and go | Slower |
| Best for | Single doors, low traffic | Most businesses | High-security areas |
Why Access Control Beats Traditional Keys
Traditional Keys
- - No record of who enters
- - Cannot track after-hours access
- - Keys are easily copied
- - Rekeying costs $200+ per lock
- - Cannot restrict by time of day
- - Lost keys = security breach
Access Control
- + Every entry logged with identity
- + After-hours access tracked
- + Credentials are unique per person
- + Deactivation is instant and free
- + Schedule-based restrictions
- + Lost card = deactivate in seconds
Common Access Control Applications
- Front entrance: Card or code entry during business hours, full lockdown after hours
- Server/IT rooms: Biometric for maximum security with full audit trail
- Stockroom/inventory: Card access limited to authorized staff only
- Executive offices: Individual card access with time-of-day restrictions
- Parking gates: Card or proximity reader for employee-only parking
- Cleaning crew access: Time-limited codes active only during scheduled cleaning hours
Upgrade From Keys to Access Control
Free assessment for Mississippi businesses. We design systems that integrate with your existing alarm for unified management.
Schedule Business AssessmentIntegration With Alarm Systems
The most powerful setup integrates access control with your alarm system:
- First employee in the morning badges in, alarm automatically disarms
- Last employee out badges out, alarm automatically arms
- After-hours access triggers camera recording and alert to management
- Single management interface for both access and alarm events
- One monitoring provider handles both intrusion and access violations
Frequently Asked Questions
What is access control?
Electronic system replacing keys with cards, codes, or biometrics. Logs every entry with who, where, and when. Access revoked instantly.
How much does it cost?
Keypad: $500-$1K/door. Card reader: $800-$2K/door. Biometric: $1.5K-$4K/door. Multi-door systems from $1,500. Cards: $2-$5 each.
Cards, codes, or biometrics?
Cards for most businesses (individual tracking, easy use). Keypads for single low-traffic doors. Biometrics for high-security areas like server rooms.
Does it integrate with alarms?
Yes. Badge in to disarm, badge out to arm. Single management interface. After-hours access triggers cameras and alerts.
What about power outages?
Battery backup maintains operation 4-8 hours. Exterior doors stay locked (fail-secure). Interior fire exits unlock (fail-safe) per code.
How do I handle employee turnover?
Deactivate the card or code instantly from software. No rekeying. No chasing down keys. Access revoked in seconds.
Know Who Enters Your Building
Access control with complete audit trails. Integrated with alarm and camera systems for unified business security.