Quick answer
The best access control system depends on your size and IT setup. Verkada, Brivo, Avigilon Alta and Kisi are cloud-managed and suit small to mid-size and multi-site businesses. Genetec Synergis and LenelS2 OnGuard fit large enterprises that want on-premises or hybrid control. HID supplies the readers, credentials and controller hardware that many of these platforms use.
Disclosure: Technology Beyond Tomorrow installs and integrates access control systems. No vendor paid for inclusion, and we do not earn commissions from any platform listed here.
Key takeaways
- Cloud platforms (Verkada, Brivo, Avigilon Alta, Kisi) trade a recurring subscription for simpler remote management.
- Enterprise platforms (Genetec Synergis, LenelS2 OnGuard) offer deep customization and on-premises control, usually through integrators.
- HID is mainly a credential, reader and controller ecosystem that works underneath many software platforms.
- Check credential compatibility first: existing cards, mobile and wallet credentials drive reader and hardware choices.
- Every platform depends on good door hardware, cabling and network design, which is where installation quality matters.
What is a business access control system?
An access control system decides who can open which doors, and when. It has four parts: credentials (cards, fobs, phones, PINs or biometrics), readers at each door, controllers that make or relay the unlock decision, and software where administrators manage users, schedules and audit logs.
The software platform gets the attention, but door hardware, power, cabling and network design determine whether the system works day to day. That is why the same platform can perform very differently in two buildings.
How we chose these systems
Technology Beyond Tomorrow is an installer, not a reseller paid by these vendors. We selected platforms that business buyers most often ask us about and compared them on objective factors.
- Widely used in US commercial buildings and actively developed as of 2026
- Clear deployment model (cloud, on-premises or hybrid)
- Support for modern credentials, including mobile
- Documented integrations with video, identity or building systems
- Available through installers and integrators in Southern California
The list: 7 access control systems compared
These are listed in no particular order. Feature sets change often, so confirm current capabilities with the vendor or your installer before buying.
1. Verkada Access Control
Verkada pairs its access controllers and readers with its camera platform, so door events and video live in the same place.
- Best for: Organizations that want access control and cameras managed in one cloud dashboard.
- Deployment: Cloud-managed through Verkada Command, with Verkada door controllers on site.
- Credential types: Cards and fobs in common formats, mobile unlock through the Verkada Pass app, and wallet-based badges where supported.
- Integrations: Native pairing with Verkada cameras, intercoms and alarms; single sign-on and user provisioning from identity providers; open API.
- Pros: Single interface for video and doors, fast remote administration, simple multi-site rollouts.
- Cons: Works best when you stay inside the Verkada ecosystem; ongoing licensing is required for the system to keep working as designed.
- Pricing model: Hardware purchase plus per-device license terms.
2. Brivo
Brivo is one of the earliest cloud access control platforms and is sold and supported through a dealer network.
- Best for: Multi-site businesses and property managers that want a mature cloud platform sold through local dealers.
- Deployment: Cloud-native (Brivo Access) with on-site Brivo control panels.
- Credential types: Cards and fobs, PINs, and Brivo mobile credentials.
- Integrations: Video integrations with several camera platforms, property management and workplace systems, and an open API.
- Pros: Long track record as a cloud-first platform; broad dealer network; strong fit for multifamily and commercial real estate.
- Cons: Pricing and support experience depend on the dealer you buy through; advanced features may require higher tiers.
- Pricing model: Subscription per door or site, typically billed through an authorized dealer, plus hardware.
3. Avigilon Alta (formerly Openpath)
Openpath was acquired by Motorola Solutions and rebranded as Avigilon Alta, the cloud side of Avigilon’s security portfolio.
- Best for: Offices that want touchless mobile entry and cloud management, often alongside Avigilon cameras.
- Deployment: Cloud-based, with Alta controllers and readers on site.
- Credential types: Mobile credentials with touchless entry, cards and fobs, and PINs.
- Integrations: Avigilon Alta video, identity providers for user sync, and third-party workplace and visitor tools.
- Pros: Smooth mobile experience; controllers can work with many existing Wiegand readers, which can ease retrofits.
- Cons: Best value when paired with the Alta ecosystem; subscription required.
- Pricing model: Hardware plus per-door subscription.
4. Kisi
Kisi focuses on a clean user and admin experience built around mobile credentials and identity integration.
- Best for: Small and mid-size offices, coworking spaces and IT-led teams that want a simple cloud system.
- Deployment: Cloud-based, with Kisi controllers and readers on site.
- Credential types: Mobile unlock through the Kisi app, cards and fobs, and wallet-based credentials where supported.
- Integrations: Identity providers for user provisioning, workplace and coworking platforms, and selected video systems.
- Pros: Clean admin interface, IT-friendly setup, straightforward multi-location management.
- Cons: Smaller ecosystem than enterprise platforms; less suited to very large or highly customized deployments.
- Pricing model: Hardware plus subscription per door or plan tier.
5. HID (Mobile Access, Signo readers, HID Origo)
HID is best understood as an ecosystem of credentials, readers and controllers rather than a single end-to-end product.
- Best for: Organizations standardizing credentials and readers across sites or platforms.
- Deployment: HID Origo is HID’s cloud platform for managing mobile identities and credentials; Signo readers and HID controller hardware work with many third-party access control software platforms.
- Credential types: Seos, iCLASS, Prox and MIFARE cards (depending on reader configuration), HID Mobile Access on phones, and employee badges in mobile wallets where supported.
- Integrations: Works underneath many access control platforms rather than replacing them; Mercury controllers, an HID brand, are supported by many software vendors.
- Pros: Broad compatibility, secure credential technologies, and a path to migrate from legacy cards to mobile.
- Cons: Not a complete management platform on its own for most businesses; you still choose access control software.
- Pricing model: Readers and controllers purchased as hardware; mobile credentials typically licensed per user or credential.
6. Genetec Synergis
Synergis is the access control module of Genetec Security Center, an enterprise unified security platform.
- Best for: Enterprises, campuses and public-sector sites that want access control unified with video and other security systems.
- Deployment: Primarily on-premises within Genetec Security Center, with hybrid and cloud options from Genetec.
- Credential types: Any credential supported by the connected readers and controllers, including cards, mobile and biometrics.
- Integrations: Unified with Genetec Omnicast video and other Security Center modules; supports open controller hardware from several manufacturers.
- Pros: Deep customization, open hardware choice, and strong unified security operations.
- Cons: More complex to design, license and maintain; typically requires a trained integrator and in-house IT support.
- Pricing model: Software licensing per reader or door plus annual maintenance, through certified integrators.
7. LenelS2 (OnGuard and NetBox)
LenelS2 offers two main platforms: OnGuard for complex enterprise sites and NetBox for simpler browser-based management.
- Best for: Large enterprises (OnGuard) and mid-size organizations wanting browser-based control (NetBox).
- Deployment: OnGuard is an on-premises enterprise platform; NetBox is browser-based and can run on site or hosted.
- Credential types: Cards and fobs, PINs, biometrics, and mobile credentials through LenelS2 and partner readers.
- Integrations: Video management systems, identity and HR systems, intrusion and building systems through a large partner program.
- Pros: Proven at enterprise scale, rich feature set, long-standing integrator network.
- Cons: OnGuard has a steeper learning curve and higher administrative overhead than cloud-first options.
- Pricing model: Software licenses and hardware through authorized integrators, with ongoing support agreements.
Decision table
| System | Best for | Deployment | Mobile credentials | Pricing model |
|---|---|---|---|---|
| Verkada Access Control | Cameras and doors in one dashboard | Cloud | Yes | Hardware + license term |
| Brivo | Multi-site and property management | Cloud | Yes | Subscription via dealer + hardware |
| Avigilon Alta | Touchless mobile entry, retrofits | Cloud | Yes | Hardware + per-door subscription |
| Kisi | SMB offices, IT-led teams | Cloud | Yes | Hardware + subscription |
| HID ecosystem | Credential and reader standardization | Cloud credential management + hardware | Yes | Hardware + per-credential licensing |
| Genetec Synergis | Enterprise unified security | On-prem, hybrid or cloud options | Via supported hardware | Per-reader licensing + maintenance |
| LenelS2 OnGuard / NetBox | Enterprise and mid-size sites | On-prem or hosted | Yes | Licenses + hardware via integrators |
How do you choose the right access control system?
Start with these questions before you compare features:
- How many doors and sites? A handful of doors in one office points toward cloud platforms; hundreds of doors across a campus may justify an enterprise system.
- Who will administer it? Cloud dashboards suit lean teams. Enterprise platforms assume trained administrators.
- What credentials do you already use? Reusing compatible cards and readers can lower migration cost.
- What should it integrate with? Cameras, intercoms, HR or identity systems, elevators and alarms all narrow the field.
- What are your door conditions? Glass doors, fire exits and older frames affect lock and hardware choices and code compliance.
Cloud or on-premises access control?
Cloud-managed systems host the software for you. You manage doors and users from a browser or app, updates are automatic, and adding a new site is simple. You pay an ongoing subscription.
On-premises systems run on servers you control. They suit organizations with strict data policies, very large door counts or complex integrations, but need in-house IT or integrator support for updates and backups.
Hybrid approaches keep local control and add cloud features such as remote management or mobile credentials. Many enterprise vendors now offer this middle path.
TBT installs and integrates access control
Technology Beyond Tomorrow designs and installs access control systems for San Diego businesses, including readers, controllers, door hardware and cloud management. We also run the structured cabling and network that every platform depends on, and connect access control with IP surveillance and intercom systems.
We are an installer, not a vendor, so we can talk through more than one platform for your doors and budget. Book a free on-site assessment to get a written scope.
Frequently asked questions
Is cloud access control secure?
Reputable cloud platforms encrypt communication between doors, controllers and the cloud and support features like single sign-on and multi-factor admin login. Security also depends on installation: network segmentation, controller placement and door hardware all matter.
Can I keep my existing key cards?
Sometimes. It depends on the card technology and whether the new readers support it. Older low-frequency prox cards are easy to clone, so many businesses use a migration as a chance to move to more secure cards or mobile credentials.
What happens if the internet goes down?
Most cloud systems store permissions on the on-site controller, so doors keep working for existing users during an outage. Changes and live alerts sync when the connection returns. Confirm offline behavior for any platform you consider.
Do access control systems need a monthly fee?
Cloud platforms generally require an ongoing subscription or license term. On-premises enterprise systems usually involve upfront software licenses plus annual maintenance. Either way, budget for ongoing costs.
Is TBT paid by any of these vendors?
No. TBT installs and integrates access control systems and is not paid by any vendor in this guide. We do not claim to be an authorized dealer of these brands.
Get a free on-site assessment
Talk to a San Diego project specialist about your building, your timeline and your budget. No obligation.
Get a free assessment