That's to control the flow of traffic so that the public does not get into the non-public areas.
More Quotes from Rick Ford:
All 16 channels are recording all the time. If you can imagine the amount of recording that's actually moving through time, it's a huge amount of data, but it only saves the video that contains motion.Rick Ford
The stations have two buttons. One is for information where you can ask for directions and the other is emergency. They are designed not only to protect the infrastructure from a security point of view, but many of the call boxes focus the nearest cameras on the area during an emergency.
Rick Ford
We met with VCC and Carter, relayed the information and within a couple of days they were expanding this wall out to meet the requirements.
Rick Ford
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