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Using surveillance technology to solve access control problems

One of the problems traditionally associated with access control is to ensure that the person using the access device is in fact the authorised user. Obviously, recording the image of the person using the device is in essence a foolproof way if the image can be compared with that of the authorised user. An added advantage is that the control office can see who is entering or leaving the area and what they have with them.

GeoVision has recognised these factors. As the GeoVision product range is in essence computer-based technology, the processing power of the computer is available to verify data captured and stored by the control system. It can therefore be integrated with biometric systems such as iris-, fingerprint- and face recognition systems to open gates, doors and booms on a positive identification.

It can also be linked to transponders inside computers and set off alarms should the equipment be moved outside designated areas, recording the image of the carrier at the same time.

Licence plate recognition

A recent addition to this is the GeoVision licence plate recognition (LPR) System that is specifically adjusted to accommodate the oddities associated with the various South African provincial plate systems. The system is available in 1, 2 and 4 lane configurations and caters for arriving and departing traffic.

This system is ideal to enable controlled access via motor vehicles to a secured area with limited human intervention. Apart from allowing the authorised users of the system automatic access and exit, it can also allow limited, time-based access to guests. The system interface is simple and very easy to understand and operate.

The host would dial the gate with the guest vehicle's number plate and the driver's details and inform the guard for what period the vehicle may be provided access to. On arrival the gate would automatically open the boom, allowing access to the area. On leaving, the guard will be notified that the guest has arrived at the exit gate, and after inspecting the vehicle the guard will allow the guest to leave.

The GeoVision system would keep records of the arrival and departure, as well as any identification detail and images that the user may stipulate, such as driver and passenger identifiable images that are date and time stamped and watermarked.

The GeoVision LPR can be programmed to provide a sound interface that will inform the guard whether it is an owner, a guest or an unknown licence plate, allowing the guard to interact with the driver as prescribed.

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