OK, this isn't really a technique. Classify it under "fun stuff." We stuck it here since we didn't have anywhere else to put it.

Ever wonder what the TSA officials were looking at when they looked at your driver's licence or passport with their small flashlight. Well, so did we.

Those little flashlights are actually small ultraviolet (UV) lights. We took several objects and placed them under our UV light and took some pictures. Take a look at what we found by clicking the link to the left.

Objects under a UV light