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Division 3 Use of four fingerprints for biometric verifications

United Kingdom

Original text. Later amendments are not shown.

CS-VIS shall be able to perform biometric verifications for accessing data with four fingers flat.

When available, fingerprints from the following fingers of either the right hand or the left hand shall be used: the index finger (NIST identification 2 or 7), middle finger (NIST identification 3 or 8), ring finger (NIST identification 4 or 9), little finger (NIST identification 5 or 10).

For ergonomic, standardisation and visualisation purposes, fingerprints from the same hand shall be used, starting with the right hand.

The finger-position shall be identified for each individual fingerprint image as specified by the ANSI/NIST-ITL 1-2000 standard.

When such finger-position identification is not possible or it proves to be erroneous, national systems may request verifications in CS-VIS involving the use of ‘permutations’f1.

Missing or bandaged fingers shall always be identified as specified by the ANSI/NIST-ITL 1-2000 standard and the VIS Interface Control Document.

Annotations

Footnotes

f1

Permutations instruct CS-VIS to perform repetitive verification between the source fingerprint(s) (one, two, three or four) and all candidate fingerprints available (mostly ten) until either a positive verification takes place or all candidate fingerprints have been searched without producing a positive verification.