This is a great use of technology—once it’s perfected—by police, as reported by the New York Daily News.

An excerpt.

“Get ready for scan-and-frisk.

“The NYPD will soon deploy new technology allowing police to detect guns carried by criminals without using the typical pat-down procedure, Police Commissioner Raymond Kelly said Wednesday.

“The department just received a machine that reads terahertz — the natural energy emitted by people and inanimate objects — and allows police to view concealed weapons from a distance.

“If something is obstructing the flow of that radiation, for example a weapon, the device will highlight that object,” Kelly said.

“A video image aired at a Police Foundation breakfast Wednesday showed an officer, clad in a New York Jets jersey and jeans, with the shape of a hidden gun clearly visible under his clothing when viewed through the device.

“The department will begin testing the high-tech device for use on the street. The device is small enough to be placed in a police vehicle or stationed at a street corner where gunplay has occurred in the past.”