Baggage scanners The scanner penetrates bags with X-ray radiation. As a bag scanned goes through the scanner, it absorbs radiation energy from the X-ray. The density of contraband such as drugs is very well known, and is easy to spot by airport security.
The scanners show you naked! But the full body scans will also show up breast enlargements, body piercings and a clear black-and-white outline of passengers' genitals. The spokespeople for the manufacturers and various security entities all assure us that the images cannot be stored. Yeah, right.