The article says it is prone to false positives. That is absolutely deadly in this business.

I didn't quite understand why we'd need the ability to track and locate explosives in a crowd. Shouldn't it be enough to detect their presence? After all, people are inherently serialized when going through screening, one at a time: if the explosives detector spots something, then you have a pretty good idea who to search.

As a result I'm not convinced this will be terribly helpful in practice.