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Note that the catchlog.com proposed design does not capture and transmit an image of a fingerprint, and would not, for example, allow matching of a skippers fingerprint against police fingerprint records. Instead, they have designed an algorithm that turns the input from the fingerprint reader into a verification number that is characteristic for a particular individual and consistent over time. The verification number is only reproducible with specific fingerprint reader technology and algorithms. Therefore there is a required eSignature registration process whereby a skipper is associated with a particular fingerprint verification number; then, whenever eLogbook data is "signed", the skipper must pass his fingers over the fingerprint reader, at which point the catchlog.com software will bind the verification number to the data.