What a blow

时间:2019-03-07 14:08:00166网络整理admin

Air travellers could be tested for drugs and explosives without even realising it, thanks to a chemical detection portal developed by Barringer Technologies in New Jersey. Each passenger walks through a gateway similar to the familiar metal detector. Gentle airflows remove particles from the person’s body and carry them into the machine. The particles can then be analysed automatically for substances such as narcotics and explosives. The portal, which is designed for use in airports, prisons and military installations,