1. A method comprising: receiving a digital image of a surface of a check, wherein a fingerprint is impressed on the surface of the check, wherein the digital image has a resolution of 500 dpi or less; using, by a computing system, the digital image to determine a match score, the match score representing a probability that the fingerprint on the check matches a plurality of reference fingerprints stored in a database, wherein using the digital image comprises: applying one or more image enhancing processing operations to a fingerprint image, the fingerprint image being a digital image containing the fingerprint; and using the fingerprint image to determine the match score; and presenting an alert based on the match score.