Transaction costs are no small consideration. Every person that passes through a screening portal or security device incurs cost. And, the first way to keep costs down is to deploy a screening device that is capable of concurrently detecting both metallic and non-metallic substances. Dual-threat capabilities reduce the cost of transaction by reducing the number systems needed to detect an increasingly varied range of substances. Additionally, fewer systems require fewer personnel to provide the same level of security.

Being able to scan more people, for more types of materials, using fewer personnel, ultimately results in a significantly lower cost per transaction.