Counter Terror Gazette

Checkpoint Ergonomics: the human makes the difference

18 Apr 2011

Technology deployed at different screening checkpoints can deliver markedly different outcomes in terms of throughput, detection rates and false alarms. Throughput can vary by as much as 50% from checkpoint to checkpoint, even when the same screening technology is being used. In some cases, the benefit of investing in new technology that, in theory, should have enhanced throughput or detection is negligible, with the outcome, in practice, being no different from the equipment it has replaced. The fact is that any security screening system comprises of more than just the screening technology itself. It is a system that is reliant upon the performance of the security officers and the behaviours of passengers. As Anthony Bridges discusses, the integration of the human factor and the application of ergonomics to system design are critical to the system’s effectiveness.

The true value of ergonomics was recognised in the Second World War. Concerned at the loss of apparently skilled and able pilots in accidents, thought was given to the loads being placed on the pilot during flight such as physical demands, attention, memory and perception. As a result of considering how the pilot interacted with the aircraft system and redesigning interfaces and processes, there was a significant reduction in accidents. The benefit was seen in other areas such as radar operations and production. This systematic consideration of what the system was trying to achieve, who used it, how it was used and when it was used resulted in the effective integration of the human and machine. MORE ONLINE