Metal-detect

Flowerdew has three known cemeteries, containing Woodland Indians, 1620s colonists and enslaved individuals from about 1760. All three are in the area metal-detected last March. […] At the Little Bighorn Battlefield, in Montana, volunteers have used their metal-detecting machines to pinpoint artifacts, whose position rewrote the story of Custer’s Last Stand.

Source: wiktionary

“They’re testing you,” she said to her son, James, after she was finally cleared, metal-detected and led upstairs to the visiting room, a spare, linoleum-floored space inside the hospital’s high-security building.

Source: wiktionary