fingerprint

(fĭngˈgər-prĭntˌ)

1. An impression on a surface of the curves formed by the ridges on a fingertip, especially such an impression made in ink and used as a means of identification.
2. A distinctive or identifying mark or characteristic: “the invisible fingerprint that's used on labels and packaging to sort out genuine products from counterfeits” (Gene G. Marcial).
3. a. A DNA fingerprint.
   b. A chemical fingerprint.

1. To take the fingerprints of.
2. To identify by means of a distinctive mark or characteristic.