How Does a Speed Gate Turnstile Prevent Tailgating and Unauthorized Access?

Power supply: AC power input for the turnstile controller and drive system.
Access control: Signal connections from RFID card readers, QR scanners, facial recognition terminals, fingerprint readers, or other access control devices.
Exit and control devices: Connections for push buttons, remote controls, fire alarm signals, or other authorized opening devices when required.
Communication: Depending on the controller, interfaces may include RS232, RS485, TCP/IP, or dry contact for integration with external systems.

Question

Accepted Answer

A speed gate turnstile helps prevent tailgating and unauthorized entry by combining access authorization, infrared passage detection, and automatic barrier control.

When a user's credential is verified, the speed gate opens to allow the authorized person to pass. Infrared sensors continuously monitor the passage area and track the sequence and direction of movement. If another person attempts to follow without separate authorization, enter from the wrong direction, or force their way through, the system can identify the abnormal passage and trigger an appropriate security response.

BOLAN speed gates can be configured with 6–16 pairs of infrared sensors（more can be added）, depending on the model and project requirements. Selected models also provide audio-visual alarms and automatic lock/reset functions for abnormal access events.

The exact anti-tailgating performance depends on the sensor configuration, control logic, access-control system, and installation conditions. Therefore, the required detection functions should be confirmed according to the project's security requirements.