| 摘要 |
A software facility is disclosed that provides enhanced authentication of a user in a security system. During an initialization phase, the facility stores the responses of a user to a set of queries and also stores various parameters surrounding the responses. During an authentication session, the user is required to provide responses to at least some of the queries that were previously presented to the user in the initialization phase. Response parameters are measured as the user provides their responses during the authentication session. The identity of the user is verified by comparing the user's new responses to the queries with the stored responses to the queries. The identity of the user is also verified by comparing the recently-measured response parameters with the previously-stored response parameters.
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