Field notes · Note 03March 28, 2026

How to Choose the Right Access Control System

A practical guide to selecting an access control system that fits your building's size, budget, and security requirements.

What Is Access Control?

Access control systems replace traditional keys with electronic credentials — cards, fobs, PINs, or biometrics — to manage who can enter your building and when. They are essential for any commercial property that needs to track and restrict access.

Types of Access Control Systems

Card and Fob Systems

The most common type, proximity card systems use RFID technology to grant access when a card or fob is tapped against a reader. They are affordable, easy to manage, and work well for buildings with moderate security needs.

Keypad Systems

PIN-based keypads are simple and cost-effective. No credentials to carry or lose. However, codes can be shared, so they are best used in combination with another access method.

Biometric Systems

Fingerprint, facial recognition, and retinal scanners offer the highest level of security. Each person's biometric data is unique and cannot be duplicated or shared. Ideal for high-security areas like server rooms and executive suites.

Mobile Access

Smartphone-based access uses Bluetooth or NFC to turn a phone into a credential. It is convenient for tenants and employees, and credentials can be managed remotely through a cloud dashboard.

Key Factors in Choosing a System

Building Size and Layout

A small office with one entrance has very different needs than a multi-building campus with dozens of doors. Map out every access point before selecting a system.

Number of Users

Systems are priced partly by user capacity. A system designed for 50 users will struggle with 500. Plan for growth when selecting your platform.

Integration Requirements

Does your building need access control to integrate with video surveillance, alarm systems, or elevator controls? Choose a platform that supports these integrations natively.

Budget

Access control systems range from a few hundred dollars for a single-door keypad to tens of thousands for enterprise biometric systems. Define your budget early and prioritize the features that matter most.

Cloud vs. On-Premise

Cloud-based systems let you manage access from anywhere and receive automatic software updates. On-premise systems keep all data local, which some organizations prefer for compliance or privacy reasons. Both have trade-offs — discuss your needs with a professional.

Professional Design and Installation

Access control is not a plug-and-play product. Proper system design considers door types, wiring paths, power requirements, and fail-safe vs. fail-secure configurations. B&B Locksmith designs, installs, and maintains access control systems across the Bay Area. Contact us for a free consultation.

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