If you're trying to figure out which type of access control system is right for your business, you're not alone. The options have multiplied fast — key cards, fobs, PIN pads, fingerprint readers, face recognition, cloud-based platforms, smartphone credentials — and knowing which one actually fits your building, budget, and security requirements isn't always obvious.
At Sense Group, we install and configure access control systems for commercial properties across Toronto and the Greater Toronto Area. We work with offices, warehouses, retail stores, corporate buildings, and multi-location businesses. We've seen every type of system in real-world conditions — and we know what works and what falls short.
This guide covers every major type of access control system available today. We'll break down how each one works, where it fits best, what it costs, and what to watch out for. By the end, you'll have a clear picture of what your business actually needs — and why.
Here's what we cover:
- What an access control system actually is
- The six main authentication types: key card, key fob, PIN keypad, biometric, mobile credential, and multi-factor
- The two main system architectures: standalone vs. networked
- Cloud-based vs. on-premise access control
- Access control by application: single door, multi-door, elevator, and vehicle access
- How to choose the right system for your business
- Integration with security cameras and other systems
- FAQs
Let's get into it.
What Is an Access Control System?
An access control system manages and restricts entry to a physical space. It replaces traditional keys with electronic credentials — cards, fobs, PINs, biometrics, or smartphone signals — and lets you control exactly who can enter which doors, at what times, and with a full audit trail of every access event.
Instead of cutting a new key every time an employee joins and chasing people down when they leave, you add or remove access permissions from a software dashboard in seconds. No locksmith. No new hardware. Just a few clicks.
Access control is one of the fastest-growing commercial security investments in Ontario — and for good reason. To understand the full picture, read our guide on what is an access control entry system and why it matters for modern businesses.
The basic components of any access control system are:
- Credential — the item or data used to authenticate identity (card, fob, PIN, fingerprint, phone)
- Reader — the device at the door that reads the credential
- Controller — the brains of the system, which verifies the credential and decides whether to grant access
- Locking hardware — the electronic lock or magnetic lock that physically secures the door
- Management software — the platform where you manage users, permissions, schedules, and reports
Now let's look at the different types — starting with authentication methods, then system architecture.
Part 1: Types of Access Control by Authentication Method
The authentication method is the credential — what a person uses to prove their identity at a door. Each method has its own strengths, weaknesses, and best-fit applications.
1. Key Card Access Control (Proximity and Smart Card)
Key card systems are the most widely used access control technology in commercial buildings across Canada. An employee carries a card — usually the size of a credit card — and taps or holds it near a reader. The reader sends the card's unique identifier to the controller, which checks it against the approved access list and unlocks the door if authorized.
How it works:
There are two main card technologies in use today:
- Proximity (prox) cards use low-frequency (125 kHz) RFID technology. They're the older standard — inexpensive and widely compatible, but easier to clone with off-the-shelf equipment.
- Smart cards use high-frequency (13.56 MHz) technology with encrypted communication. They're much harder to clone and are the current recommended standard for commercial installations. Brands like HID iCLASS and MIFARE DESFire operate on this standard.
Best for: Corporate offices, multi-tenant buildings, healthcare facilities, government offices, warehouses.
Strengths:
- Easy to manage — add or deactivate a card instantly from software
- Cards are inexpensive to replace
- Works with most commercial door hardware
- Supports time-based access schedules and access level tiering
- Provides a detailed audit trail of every entry event
Weaknesses:
- Cards can be lost, stolen, or lent to another person
- Lower-frequency prox cards are vulnerable to cloning
- Employees need to carry the card on them
Cost: Key card readers typically range from $150–$400 per door for the reader hardware. Smart card-compatible readers are at the higher end but are strongly recommended over legacy prox card readers for any new installation.
2. Key Fob Access Control
Key fobs use the same RFID technology as proximity cards but in a small, keychain-mounted form factor. They're functionally identical to prox card systems in terms of how they work — the difference is purely physical. Fobs clip onto a keychain, which means most people always have them on hand.
For a detailed comparison of both options, read our guide on key fob vs. key card access control.
Best for: Industrial facilities, warehouses, manufacturing plants, parking gates, properties where employees don't typically carry wallets or bags.
Strengths:
- Extremely convenient — attaches to existing keys
- Durable and weather-resistant options available
- Same easy management and audit trail as card systems
- Low per-unit cost
Weaknesses:
- Same cloning vulnerability as legacy prox cards if using 125 kHz technology
- Can be lost or shared, just like cards
- Smaller form factor means easier to misplace
Cost: Fob hardware costs are similar to card systems. Fob readers: $150–$350 per door. Individual fobs: $5–$20 each depending on the technology and quantity.
3. PIN Keypad Access Control
PIN (Personal Identification Number) keypads require a user to enter a numeric code to gain access. No physical credential is needed — just knowledge of the code.
Best for: Low-traffic secondary entrances, storage rooms, stairwells, server rooms with a small number of authorized users.
Strengths:
- No credential to lose, forget, or clone
- Low hardware cost
- Simple to install and operate
- Works well as a secondary factor alongside another credential
Weaknesses:
- Codes can be shared — there's no individual audit trail unless each user has a unique PIN
- "Shoulder surfing" — someone nearby can observe and memorize a code
- Codes need to be changed periodically for security, which adds management overhead
- Over time, worn keys on a keypad can reveal the code
Cost: Standalone PIN keypads start as low as $80–$200. Networked PIN readers with individual code management: $200–$500.
Pro tip: We rarely recommend PIN-only systems as the primary access method for main entrances. They work well in combination with a card or fob credential, or for low-security secondary zones.
4. Biometric Access Control
Biometric systems use unique physical characteristics to verify identity. The most common types in commercial use are:
- Fingerprint readers — the most widely deployed biometric in commercial access control
- Facial recognition cameras — growing quickly, particularly for higher-security or high-traffic applications
- Iris scanners — high-security environments (data centres, government facilities)
- Palm vein readers — used in healthcare and finance
How it works:
A user registers their biometric data (fingerprint, face) during enrollment. The system stores a digital template — not an image — and compares future scans against it. If the scan matches within a defined tolerance, access is granted.
Best for: Server rooms, data centres, pharmaceutical storage, financial institutions, any environment where you need absolute certainty about identity — not just credential possession.
Strengths:
- Credentials cannot be shared, lost, or stolen
- No cards or fobs to manage
- Highest confidence in identity verification
- Touchless facial recognition is contactless and hygienic
Weaknesses:
- Higher hardware cost per reader ($300–$1,500+)
- Enrollment process required for each user
- Some users have fingerprint registration issues (dry skin, physical labour, certain medical conditions)
- Privacy considerations — biometric data storage is subject to stricter regulations in Canada
- False rejection rates require attention during setup
Cost: Biometric readers range from $300 for fingerprint readers to $1,500+ for facial recognition units. Enterprise-grade biometric systems with server-based matching are priced higher and typically suit larger organizations.
5. Mobile Credential Access Control (Smartphone-Based)
Mobile credential systems turn an employee's smartphone into their access card. Using Bluetooth Low Energy (BLE) or Near Field Communication (NFC), the phone communicates with the reader to grant access — no physical card needed.
This is one of the fastest-growing access control technologies in commercial buildings. Platforms like Ubiquiti UniFi Access, Brivo, and Openpath use mobile credentials as a core feature.
How it works:
Administrators send digital credentials to users through a mobile app. The user holds their phone near the reader (NFC) or simply walks up to it (BLE "hands-free" mode). Access is granted based on the credential in the app.
Best for: Tech-forward offices, co-working spaces, property management companies, multi-location businesses, organizations with frequent employee turnover.
Strengths:
- No physical credentials to manage, distribute, or replace
- Credentials can be issued or revoked instantly from anywhere
- Most employees already have a smartphone
- Hands-free Bluetooth entry is extremely convenient
- Detailed access logs tied to individual users
- Works even when the user forgets their badge — as long as they have their phone
Weaknesses:
- Requires employees to have smartphones and keep the app installed
- Battery-dead phones can cause lockouts (most systems have a PIN backup)
- Slightly higher reader hardware cost than basic card readers
- Some older employees or contractors may find app-based entry unfamiliar
Cost: Mobile-credential-capable readers typically range from $250–$600 per door. The main platform cost is the software subscription — most commercial systems charge per door per month.
6. Multi-Factor Authentication (MFA) Access Control
Multi-factor access control requires two or more forms of credential to grant entry. The most common combinations are:
- Card + PIN
- Card + fingerprint
- Phone + PIN
This is standard practice for high-security zones — server rooms, executive offices, research labs, cannabis facilities, pharmaceutical storage — where a single compromised credential isn't enough to gain entry.
Best for: Any environment with strict security requirements, regulated industries, or high-value asset protection.
Cost: MFA setups use the same reader hardware, often with combined card + keypad readers. Hardware: $250–$700 per door depending on the credential types involved.
Part 2: Types of Access Control by System Architecture
Authentication method tells you how a person gets in. System architecture tells you how the system is structured, managed, and maintained. This is the technical decision that affects scalability, reliability, and long-term management costs.
Standalone Access Control Systems
A standalone system operates without a network connection. The access controller and reader are self-contained — credentials are programmed directly into the device, and there's no central software platform managing the system.
Best for: Single-door installations, small businesses with simple needs, storage units, server rooms with very few authorized users.
Strengths:
- Low upfront cost
- Simple to install — no network infrastructure required
- No ongoing software subscription fees
- Works reliably without internet dependency
Weaknesses:
- No central management — each door must be configured individually
- No real-time audit trail or remote monitoring
- Adding or removing users requires physical access to each controller
- Doesn't scale — managing 5 standalone units across a building becomes a headache fast
Cost: Standalone systems are the most affordable — basic single-door controllers start at $200–$400 installed.
If you're running a small office with a single entrance and a handful of employees, standalone might be sufficient. For anything more, networked systems are the better long-term investment.
Networked (IP-Based) Access Control Systems
Networked systems connect each door controller to a central server or management platform over your IP network. This is the standard for most commercial installations in the GTA today.
All door events are logged centrally. Administrators can add or remove users, change access levels, pull reports, and receive alerts — all from a single software interface. These systems use the same network cabling infrastructure as your IP cameras and computers.
Best for: Multi-door offices, corporate buildings, warehouses, facilities with 10+ employees, any business that needs centralized management.
Strengths:
- Centralized management of all doors from one interface
- Real-time access logs and event alerts
- Instant credential revocation across all doors simultaneously
- Integrates with HR systems, visitor management platforms, and security cameras
- Scales easily — add doors without replacing the core infrastructure
Weaknesses:
- Higher upfront cost than standalone
- Requires structured data cabling to each door controller
- Needs an IT network to run on (though most modern offices already have one)
Cost: Networked access control systems typically start at $500–$1,200 per door for hardware and installation, depending on the controller, reader type, and door count.
Part 3: Cloud-Based vs. On-Premise Access Control
This is one of the most common questions we get from business owners today — and it's worth its own section.
Cloud-Based Access Control
Cloud-based systems store all access data, user credentials, and event logs on remote servers managed by the software vendor. Administrators manage the system through a web browser or mobile app — no on-site server required.
Platforms like Ubiquiti UniFi Access, Brivo, Openpath, and Verkada are popular cloud-based options we work with.
For a deep dive into this comparison, read our guide on cloud vs. on-premise access control.
Best for: Multi-location businesses, property management companies, businesses without in-house IT staff, organizations that need remote management.
Strengths:
- Manage access for all locations from anywhere — one dashboard, multiple sites
- No on-site server to maintain or replace
- Automatic software updates and security patches
- Scales instantly — add a door or a new location without hardware upgrades
- Ideal for managing multiple store locations remotely
Weaknesses:
- Monthly or annual software subscription cost
- Dependent on internet connectivity — if your connection goes down, you need local failover
- Data is stored with a third-party vendor — relevant for regulated industries with strict data residency requirements
- Long-term subscription costs can exceed on-premise costs over many years
Cost: Cloud access control typically involves hardware costs of $400–$900 per door plus a software subscription of $3–$15 per door per month, depending on the platform and feature tier.
On-Premise Access Control
On-premise systems run on a local server at your facility. All data stays in your building. Management software is installed locally, and the system operates independently of an internet connection.
Best for: Organizations with strict data security requirements (government, healthcare, legal, finance), large enterprises with dedicated IT staff, businesses where internet reliability is a concern.
Strengths:
- Full control over data — nothing leaves your building
- No ongoing subscription fees
- Operates fully offline if needed
- Better fit for compliance-heavy industries (PIPEDA, HIPAA, etc.)
Weaknesses:
- Requires an on-site server and IT maintenance
- Higher upfront infrastructure cost
- Software updates require manual intervention
- Managing multiple locations is more complex than cloud
Cost: On-premise systems have higher upfront costs — server hardware ($1,000–$5,000+), software licences ($500–$5,000+ depending on door count), plus installation. No recurring software fees after initial setup.
Part 4: Types of Access Control by Application
Beyond authentication method and architecture, access control systems are designed for different physical applications. Here's how system type varies by where it's being installed:
Single-Door Access Control
The most basic application — one door, one reader, one controller. Common for server rooms, back offices, storage areas, or the main entrance of a small office.
Most standalone systems are designed for single-door use. For networked single-door installs, small IP controllers handle the job without a full server infrastructure.
Multi-Door Access Control
Multi-door systems use a central controller — typically handling 2, 4, 8, or 16 doors — connected to readers at each door. This is the standard for any commercial property with multiple secured entry points.
Most commercial access control installations in Toronto involve multi-door configurations. A typical mid-size office might have a main entrance, back entrance, server room, executive floor, and parking garage — each requiring its own reader and access level.
Elevator Access Control
Elevator access control restricts which floors a credential holder can access. A card reader or keypad is installed inside the elevator cab. Authorized users tap their card, and only the floors they're permitted to access become selectable.
This is common in multi-tenant office buildings, hotels, healthcare facilities, and residential towers. The controller communicates with the elevator's floor-select buttons to enable or disable specific floors per credential.
Parking Lot and Vehicle Gate Access Control
Vehicle-based access control uses long-range readers, barrier arms, or bollards to control vehicle entry to a parking lot, underground garage, or gated facility.
Long-range RFID readers can detect credentials from several metres away — drivers don't need to roll down their window. Common credential types for vehicle access include long-range RFID cards, vehicle-mounted transponders, and licence plate recognition cameras.
Turnstile and Pedestrian Barrier Access Control
Turnstiles, speed gates, and mantrap vestibules are physical barriers that integrate with access control readers to control pedestrian flow in high-security or high-traffic environments. Common in office lobbies, transit facilities, data centres, and government buildings.
Choosing the Right Access Control System for Your Business
With all these options in front of you, here's a practical framework for narrowing it down:
How many doors do you need to secure?
One or two doors — a standalone or basic networked system may be enough. Five or more doors — a multi-door networked system is the right call.
How many employees and how often does your roster change?
High turnover businesses benefit enormously from cloud-based or networked systems where credentials can be issued and revoked instantly. Static teams with little change can use simpler credential management.
Do you have multiple locations?
Cloud-based access control is built for multi-site management. On-premise systems require separate management at each location.
What's your security priority?
A reception area needs different security than a server room or a pharmaceutical vault. Layer your credential strength to match the sensitivity of the space — card access for general areas, biometric or MFA for high-security zones.
What's your IT infrastructure like?
Networked access control runs on your data network. If you already have solid network cabling infrastructure and a managed switch, adding access control is relatively straightforward. If your cabling is a mess, that gets sorted first.
What does your budget look like?
For help with pricing, read our guide on access control system costs in Ontario. We can also design tiered installations — starting with your highest-priority doors and expanding over time.
For small businesses just getting started, our guide on access control systems for small businesses covers the most cost-effective entry points.
Brands We Install: Ubiquiti and ICT Access Control
At Sense Group, we primarily install two platforms for commercial access control in the GTA:
Ubiquiti UniFi Access
Ubiquiti's UniFi Access platform is a cloud-managed, IP-based system that integrates natively with their UniFi camera and networking platforms. It supports key card, key fob, PIN, and mobile credentials. The management interface is clean, intuitive, and built for multi-site management from a single dashboard.
It's a strong fit for tech-forward offices, co-working spaces, and growing commercial businesses that want a unified security and network platform.
ICT (Integrated Control Technology)
ICT is a New Zealand-based manufacturer with a strong North American commercial presence. Their Protege platform supports everything from simple card-based installations to complex enterprise deployments with biometrics, intrusion detection integration, and advanced reporting.
It's the right choice for larger commercial installations, regulated industries, or projects requiring deep customization and enterprise-grade reliability.
Our installers are experienced with both platforms and will recommend the right fit based on your building, security goals, and budget.
Integrating Access Control With Your Other Security Systems
Access control is most powerful when it works alongside the rest of your security infrastructure:
Security Cameras (CCTV)
Integrating your access control system with your commercial security camera installation creates a unified security layer. When a door is accessed, the nearest camera automatically timestamps and flags the footage. When a door is forced open, the alarm triggers and the camera activates simultaneously. Read our detailed guide on how to integrate access control with CCTV for specifics on how this works.
Video Doorbell and Intercom
A video doorbell installation at your main entrance lets staff verify visitor identity before granting access — remotely, from any device. Paired with access control, it adds a human verification layer on top of the credential system.
Network Infrastructure
All networked and cloud-based access control systems run on your IP network. Proper network cabling and managed switches are the foundation. Without clean, tested cabling to each door controller, you'll deal with intermittent connectivity and unreliable access events. We install the cabling and the access control as part of the same project — one team, no coordination headaches.
Wi-Fi Access Points
Mobile credential systems and cloud-managed platforms benefit from strong wireless coverage throughout the building. Our access point installation service ensures the network foundation supports your access control system reliably.
Our Related Services
When we install an access control system for a GTA business, here's what we commonly bundle into the same project:
Access Control System Installation — Full commercial access control design, installation, and configuration across the GTA. Serving Toronto, Hamilton, Huntsville, and all surrounding Ontario communities.
Commercial Security Camera Installation — IP camera systems integrated with your access control platform for a unified security solution.
Network Cabling Installation — Structured data cabling for access controllers, cameras, and your full network infrastructure.
Video Doorbell / Intercom Installation — Smart entry management at your main entrance, tied to your mobile device and access control system.
Access Point Installation — Enterprise Wi-Fi coverage that supports cloud-based access control platforms and mobile credentials.
Frequently Asked Questions: Types of Access Control Systems
What are the main types of access control systems?
The main types, by authentication method, are: key card, key fob, PIN keypad, biometric (fingerprint or facial recognition), and mobile credential (smartphone). By system architecture, the two main types are standalone and networked. Networked systems can be further split into cloud-based and on-premise. Most commercial businesses use a networked, cloud-based key card or mobile credential system.
Which type of access control is most common for offices in Ontario?
Key card and key fob systems are the most common in commercial offices across the GTA. Cloud-based platforms with mobile credential support are growing fast, particularly for businesses with multiple locations or high employee turnover.
What's the difference between cloud-based and on-premise access control?
Cloud-based systems store data on vendor-managed servers and are accessed through a web portal or app — no on-site server needed. On-premise systems run locally on your own server with no external data dependency. Cloud is easier to manage and scale. On-premise gives you full data control and works without internet connectivity. Read our full comparison guide on cloud vs. on-premise access control.
Is biometric access control worth it for a small business?
For most small offices, biometric is overkill for general entrances. It makes more sense for high-security zones like server rooms, executive areas, or pharmaceutical storage where absolute identity certainty is needed. A card or mobile credential system is usually the better value for primary commercial entrances.
Can I integrate my access control system with my existing security cameras?
Yes. Modern IP-based access control systems integrate directly with most commercial IP camera platforms. We regularly install combined access control and camera systems as a single project. See our guide on how to integrate access control with CCTV for a full breakdown.
What's the difference between a key card and a key fob?
They use the same RFID technology — the difference is form factor. Key cards are credit-card sized and fit in a wallet. Key fobs are small plastic units that clip to a keychain. Key fobs tend to suit trades workers, warehouse staff, and anyone who doesn't typically carry a wallet on the job. For a detailed comparison, read our guide on key fob vs. key card access control.
How many doors can one access control system manage?
Modern multi-door networked systems handle anywhere from 2 to 64+ doors per controller, and cloud-based platforms can manage thousands of doors across multiple sites from one dashboard. For most small-to-medium commercial offices in the GTA, an 8- or 16-door controller covers all needs.
How much does a commercial access control system cost in Ontario?
Costs vary widely by system type, door count, and credential method. Basic standalone systems start at $200–$400 per door. Networked card-based systems typically run $500–$1,200 per door installed. Biometric and enterprise-grade systems cost more. For a full breakdown, read our guide on access control system prices.
What access control brands do you install?
We primarily install Ubiquiti UniFi Access and ICT (Protege) systems for commercial clients across the GTA. Both are enterprise-grade platforms suited to a wide range of commercial applications, from small offices to large multi-site deployments.
Do you offer access control installation in Hamilton and other GTA cities?
Yes. We install access control systems in Toronto, Hamilton, Huntsville, and all surrounding communities across Ontario. Contact us for a free on-site estimate.
Final Thoughts
Access control isn't a one-type-fits-all technology. A key card system that works perfectly for a 20-person accounting firm is a completely different animal from a biometric multi-factor setup at a pharmaceutical company. The right answer depends on your building, your team size, your security priorities, and your budget.
What's consistent across every type is this: a professionally designed and installed system will outperform a cheap DIY setup every single time. Proper credential programming, tested door hardware, clean IP cabling, and integrated software management — these are what make an access control system actually work in the long run.
At Sense Group, we've installed access control systems across hundreds of commercial properties in Toronto and the GTA. We design systems that fit the actual business — not just whatever's on a shelf.
Ready to secure your doors? Contact Sense Group for a free on-site assessment. We'll walk your property, understand your access needs, and recommend the right system — at a straight-up price with no surprises.











