XBIS - What does XBIS stand for? The Free Dictionary
References in periodicals archive
Also, if there are four entry- exit points, it would require as many XBIS and doorframe metal detectors to cover all gates to screen passengers.
These are being used in modern explosives and cannot be detected by XBIS machines.
Tenders are invited for "Annual Operation & All Inclusive Comprehensive Maintenance contract of security equipments like XBIS