Screening high-security entrances with metal detection and X-ray

Walk-through metal detection and X-ray inspection add control where people or baggage must be screened before access.

Start with the threat and flow

Screening should fit the number of people or bags entering, the threat level, and the physical space available.

Design the checkpoint as a process

Screening is an operational design problem before it is an equipment one. Walk-through metal detection and X-ray inspection both add control at an entrance, and both add time. Whether they work depends on throughput, queue space, where a secondary search happens and how many staff are on the door — decisions that have to be made before the equipment is positioned, not after.