1. A method of capturing images of a subject at a checkpoint for recognition of the subject comprising the steps of: creating a checkpoint; positioning an image capturing device so that the image capturing device can capture an image of a subject at the checkpoint; filtering the light that enters the image capturing device so that only a predetermined bandwidth enters the image capturing device; positioning a light source so that the light source can illuminate a subject at the checkpoint; providing a light from the light source when the light source is activated that has a bandwidth that is similar to the predetermined bandwidth that enters the image capturing device; capturing a first image of a subject at the checkpoint with the image capturing device with ambient light; activating the light source; capturing a second image of the subject at the checkpoint with the image capturing device while the light source is activated; and determining a difference image by subtracting the second image from the first image.