| 摘要 |
A system for authentication of a client includes logic supporting a "what user knows" algorithm for authentication of a client, such as a random partial pattern recognition algorithm, based upon client credentials including an account user name and an account authentication code. Logic supporting client account administration is operable without human intervention on the server side, and includes at least one mode of operation that presents an interface to a client via the data network having at least two tiers of security based on input by the client of secret information shared only between the client and the server. A first tier in said at least two tiers requires entry of one of the account user name and user's email address, and a second tier in the at least two tiers requires entry of one of client profile data sufficient to identify the client and at least a subset of said account authentication code.
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