Anti-tailgating system


Anti-tailgating system ACCURANCE-3D
  • A3001S[Camera]
  • A3001CB[Control box]


Accurance 3D is a tailgating detection system designed for high security two door interlocks. It adds a layer of security to the access control system by ensuring single occupancy inside the interlock.

The security provided by an access control system is compromised if an authorised person is followed by an unauthorised one.
Tailgating can lead to asset and intellectual property loss and risk to employee safety. Accurance 3D has been designed to analyse the airlock area and detect if more than one person is present.

Accurance 3D system comprises a control box and one sensor for unidirectional applications and two sensors for bi-directional
applications. The sensor itself includes a set of infrared LED
illuminators and a “time of flight” sensor.

Piggybacking and tailgating detection with Accurance 3D: sequence of events explained

Authorised user presents his/her card and door 1 opens.
A second individual follows the first one without swiping his/her card.

Door 1 shuts and Accurance 3D starts analysing the area inside the interlock.
More than one person is detected and access is denied.

Door 1 re-opens for the occupants to leave the interlock.
The interlock is empty, the system can reset.

Authorised user presents his/her card and door 1 opens.

Accurance 3D detects a single occupant in the interlock.
Access is granted and door 2 opens.

  • Analyses the X, Y, Z coordinates for all encountered objects in the detection area
  • Topographic 3D data guarantees high accuracy rates
  • Multiple or suspicious occupancies will not be granted access
  • Does not rely on any heat or light source
  • Not affected by reflection or glare
  • One control box can manage up to two sensors
  • Can be integrated to an access control system via relay outputs
  • Can be used in both directions — one way (entry only) & two way (entry & exit)

Distance image

One person
Two persons
A person pushing a wheelbarrow

Please go to the support page to get the necessary files in PDF and/or DXF.

  • Specifications

  • Dimensions

Power input

24VDC - Supplied from control box

Current draw

840 mA max. (24 VDC)

Operating temperature

-10°C to +50°C

Operating humidity

0% to 80% - No condensation

Installation location


Applicable door

Outward opening interlock door

Detection method

Time of Flight

Light source


Image pixels

176(H) 132(V)

Angle of view

Horizontal: Approx. 70°, Vertical: Approx. 55°

Mounting height

7.55 to 9.51ft (2.3 to 2.9m)

Maximum detection height of person

6.73ft (2.05m) - Depends on installation height & location


Ethernet (100BASE-TX) RJ-45


Power: green. Output: green, red, blue


6.3 x 2.83 x 1.97in (160 x 72 x 50mm) H x W x D - Excluding cables


1.32lb (600g) - Excluding cables

Specifications and design are subject to change without prior notice.

Camera(Detection unit) A3001S

Control box A3001CB

Contact phone number


Support information