Method and apparatus for verifying identity

• US 4,947,443 A
• Filed: 10/28/1988
• Issued: 08/07/1990
• Est. Priority Date: 05/07/1986
• Status: Expired due to Term

• Current Assignee: Brendan D. Costello
• Original Assignee: Brendan D. Costello
• Inventors: Costello, Brendan D.
• Primary Examiner(s): Boudreau, Leo H.
• Assistant Examiner(s): Jung, Yon
• Application Number:
  US07/264,964
• Time in Patent Office: 648 Days
• Field of Search: 382/2, 382/4, 382/5
• US Class Current: 382/125
• CPC Class Codes: G06V 40/1347 Preprocessing; Feature extraction
• CPC Class Codes: G07C 9/257 electronically G07C9/26 takes precedence

Abstract

A method for verifying the identity of a person relative to a record of topographically related permanent natural physical characteristics on a friction skin surface of the body of a person is shown. The record includes for each of at least four of the characteristics a data package of machine readable codings relating to the type, orientation, and location of that characteristic and relating to the counts of the numbers of some other permanent, natural physical feature of the friction skin surface lying on each of the lines between that characteristic and each and every other characteristic of the at least four characteristics.

Claims

1. A method for verifying the identity of a person relative to a record of topographically related permanent, natural, physical characteristics on a friction skin surface of the body of a person, which record purports to belong to that person, the record including a data package for each of at least four of said characteristics, said data packages each comprising machine readable codings relating of the type, orientation, and location of one of said at least four characteristics and relating to the separate counts of the number of some other permanent, natural, physical feature of the friction skin surface lying on each of the lines extending between that one said characteristic and each and every other characteristic in said at least four characteristics, which method comprises, in any order, sequentially or concurrently the steps of:

(a) observing, in any order, sequentially or concurrently topographically related permanent, natural, physical characteristics on a friction skin surface of the person;

(b) assigning, in any order sequentially or concurrently to each of selected individual observed characteristics a data package comprising machine readable codings relating to the type, orientation, and location of that observed characteristic and relating to the separate counts of the number of some other permanent, natural physical feature of the friction skin surface lying on each of the lines extending between that observed characteristic and each and every other characteristic in the said selected observed characteristics;

(c) in any order, sequentially or concurrently, electing at least four of the data packages from one of either of the record or the data packages relating to the observed characteristics;

(d) in any order, sequentially or concurrently, comparing the machine readable codings from the elected data packages with the machine readable codings of data packages in the other of the record or the data packages relating to the observed characteristics; and

(e) making an identity comparison between at least four of the elected data packages with at least four of the data packages held in the other of the record or the data packages relating to the observed characteristics.

2. A method as claimed in claim 1, wherein the characteristics are the characteristics of the fingerprint of a person and the features are the ridges of that fingerprint.

3. A method as claimed in claim 1, in which the comparison in step d is done between at least six characteristics.

4. A method as claimed in claim 1, wherein the comparison between the machine readable codings for the data packages in the record and those for the data packages relating to the observed characteristics as carried out by identifying characteristics which occur in both the recorded and observed characteristics as having substantially the same type, location and orientation and the counts of the said other permanent, natural, physical feature are done between those identified characteristics.

5. A method as claimed in claim 1, wherein the record is held in the form of binary coded information in a memory medium carried by a plastics card.

6. A method for preparing a record for use in the method of claim 1 wherein said data packages are obtained relating to the friction skin surface of a person and those data packages are applied to a recording medium to provide said record.

7. A method for verifying the identity of a person at a locus to enable an operation to be carried out when that identity has been verified, which method comprises scanning a finger of the person at the locus to provide machine readable identification of the type, location and orientation of the characteristics of the fingerprint of that person and of the ridge counts between each and every one of at least four of the characteristics located during said scanning;

comparing that identification with a machine readable record purporting to be that of that person'"'"'s fingerprint which has been obtained before hand and which is presented by that person to the locus concurrently with his finger so that the existence of the same coincident sequences between at least four of the characteristics in the said identification and in the record can be established; and

permitting the operation to occur when such a coincident sequence has been established.