TSA Type Metal Detectors The BorderTransportationSystem is designed to provide services to those needing transportation, water, fuel, recreation, and opportunities for advancement, but there will be attempted attacks on the system by some that just want to disrupt the system. Thus, TSA type metal detectors or other screening devices should screen everyone entering the system at the border locations and train stations.  There is though a lot of controversy over the use of the scanners and also the effectiveness of some scanners.. Index of ... Customs and Border Protection Full body scanner Security & Detection Products