Optical vs Full Height Turnstile: Which One Stops Tailgating?

Optical vs Full Height Turnstile — it’s one of the most important decisions when securing a building’s entry points. Both systems are designed to control access and deter unauthorized entry, but they work in fundamentally different ways.

And when it comes to stopping tailgating — the silent, costly security breach where an unauthorized person slips in behind a badged employee — the difference between the two is not just technical. It’s the difference between detecting a problem and preventing one entirely.

Therefore, in this article we will discover which one will effectively stops tailgating either with optical vs full height turnstile.

What Is Tailgating?

Tailgating happens when an unauthorized individual follows a credentialed person through a secured entrance without presenting their own valid access credential. It is fast, often looks innocent, and is rarely challenged by staff who don’t want to seem rude.

The consequences, however, are anything but innocent. A single tailgating incident can expose your facility to theft of assets and intellectual property. The data breaches in server rooms or finance offices, regulatory non-compliance with ISO, SOC 2, or industry-specific standards, and serious liability if an intruder causes harm on-site.

Anti-Tailgating Turnstile: Optical

Optical turnstiles are the go-to choice for modern corporate lobbies. They look elegant, integrate seamlessly with access control systems, and use infrared sensor beams to detect when more than one person attempts to pass through a single authorization.

For example: An optical turnstile such as ZKTeco MTS1000 Series Tripod Turnstile

What optical turnstiles do well:

• Handle high-traffic environments efficiently
• Provide an excellent user experience for authorized personnel
• Trigger alarms and alert security guards when tailgating is detected
• Integrate with visitor management systems and biometric readers
• Maintain an aesthetically pleasing, welcoming entrance

Where optical turnstiles fall short:

The critical limitation of optical turnstiles is that they detect and alert — they do not physically prevent. When a second person follows through, the barrier wings attempt to close and an alarm sounds, but a determined individual can push through before staff respond. In unsupervised environments or during peak hours when guards are overwhelmed, this window of vulnerability is exactly what bad actors exploit.

Anti-Tailgating Turnstile: Full-Height

Full-height turnstiles, by contrast, are a physical enforcement mechanism. Resembling a rotating door that extends floor to ceiling, they permit exactly one person per authorization cycle — and physically cannot be bypassed without a valid credential or brute force.

For example: A full height turnstile such as VIRTUO VT-FT537 Single Full Height Turnstile

What full-height turnstiles deliver:

• Zero tailgating tolerance — piggybacking is physically impossible once the arm completes its cycle
• No dependency on guard supervision to enforce access
• High resistance to forced entry, with crash-rated options available
• Consistent, audit-ready access logs for compliance reporting
• Effective performance even in low-staffed or unmanned environments

For data centers, research labs, government facilities, warehouses, and any environment where unauthorized entry carries serious risk, full-height turnstiles are not just an option — they are the minimum standard.

Optical vs Full-Height Turnstile Comparison

Optical Turnstiles (Speed Gates)

• Security Level: Medium; relies on infrared sensors to detect unauthorized entry or tailgating.
• Best For: Corporate lobbies, high-end offices, and environments where aesthetics matter.
• Throughput: Very high (30–50 people per minute); ideal for heavy commuter traffic.
• Physical Barrier: Determined intruders can vault over minimal or retractable glass or acrylic wings.
• Supervision: Requires monitoring by security staff or cameras to respond to sensor alarms.
• Accessibility: Designers easily integrate wide lanes to meet ADA standards for wheelchairs and strollers.

Full-Height Turnstiles

• Security Level: Maximum; provides a floor-to-ceiling mechanical barrier that is virtually impossible to climb over or crawl under.
• Best For: Exterior perimeters, data centers, stadiums, and high-security industrial sites.
• Throughput: Lower; the mechanical rotation restricts flow to one person at a time at a slower pace.
• Physical Barrier: Rotating steel arms create a “cage” effect that physically prevents unauthorized access.
• Supervision: Can operate entirely unmonitored (24/7 “guard” functionality).
• Accessibility: Not natively accessible; usually requires a separate side-access swing gate for wheelchairs and large deliveries.

So Which One Should You Choose?

The right answer depends on your environment, but one principle always holds. If you cannot guarantee an attentive security presence at all times, optical turnstiles alone are not enough.

Choose optical turnstiles if:

• Your entrance is staffed and supervised at all hours
• User experience and throughput speed are top priorities
• Your building has a corporate or hospitality feel to maintain

Choose full-height turnstiles if:

• Your facility has unsupervised or after-hours entry points
• You require zero-tolerance tailgating prevention
• You operate in a regulated industry with strict access control mandates
• Physical security is non-negotiable — data centers, labs, government, utilities

Get A Professional Turnstile Gate System Installation

If you are serious about protecting your people, your assets, and your compliance posture, it starts with choosing the right turnstile. Then, getting an installation from professional installer such as from Lockpro Technology will ensure you peace of mind.

We are specialize in providing and installing turnstile gate systems across Peninsular Malaysia and East Malaysia. We will help you find the right solution for your building. Whether it is a corporate office, shopping mall, university, or transit hub.

End Note

Tailgating is silent, fast, and devastatingly can cause harm. The difference between detecting an unauthorized entry and preventing one can mean the difference between a near-miss and a costly breach.

At Lockpro Technology, we hope that this optical vs full height turnstile article will assist you to decide the best turnstile gate system for your surroundings.

Contact us today for a free consultation and learn more about the Turnstile Gates In Malaysia and how we can support your access control needs.