A system for performing authentication of a first user to a second user includes the ability for the first user to submit multiple instances of authentication data which are evaluated and then used to generate {HEAD ~ an overall level} of {TAIL ~ confidence} in the claimed identity of the first user 
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A system for performing authentication of a first user to a second user includes the ability for the first user to submit multiple instances of authentication data which are evaluated and then used to generate { HEAD ~ an overall level } of { TAIL ~ confidence } in the claimed identity of the first user
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