A TSA agent – let’s call him or her Agent Pat – will tell you to remove jackets, belts, wallets, bulky jewelry, money, keys, cellphones, and anything else in your pockets, enter the scanner, put your feet in designated spaces, put your hands on or above your head, and hold still.
The machine will use either X-ray backscatter or millimeter waves to look through your clothes and create an outline of your body.
Some passengers report feeling a buzzing or vibration in the air; others feel nothing. The scan lasts for 10 to 20 seconds, during which any metal, ceramic, or other dense materials will show up on an image of you that will be seen by another TSA agent – Agent Chris.