Clarke, Roger --- "Table A: Bases for identification" [1995] PrivLawPRpr 55; (1995) 2(5) Privacy Law & Policy Reporter 88

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Table A: Bases for identification

• Appearance how the person looks
• Social behaviour how the person interacts with others
• Names what the person is called by other people
• Codes what the person is called by organisations
• Knowledge what the person knows
• Tokens what the person has
• Bio-dynamics what the person does
• Natural physiography what the person is
• Imposed physical what the person is now characteristics

Clarke R A 'Human Identification in Information Systems: Management Challenges and Public Policy Issues' Information Technology & People 7, 4 (December 1994)