D/FW AIRPORT -- Under a black light, hard-to-reproduce holograms on identification cards, such as the Texas driver's license, become visible.

There on your driver's license, for example, a bunch of little yellow "TEXAS" holograms appear.

Different cards have different identifiers. (The Swiss identification card has a cobalt blue fishnet design. In the photo area is a second green-yellow hologram: "SCHWEIZ, SUISSE, SVIZZERA, SVIZRA, SWITZERLAND.")

The Transportation Security Administration, which has taken over document-ticket screening at U.S. airports, is rolling out small black lights and loupes (magnifying lenses) to 1,300 specially trained screeners who check suspicious IDs in the ticket lines.