Identity verification via selection of sensible output from recorded digital data

摘要

A digital data sampler operating in a computer processor selects and stores digital data samples from a data stream used for generating audio-visual output during a session with a client operated by a user. The session generates the data stream independently of the data sampler. The data sampler may collect parameter data correlated to a probability will be remembered by the user at some future time, for each sample. The data sampler may store the data samples and parameter data as shared secret data for use in a future authentication session. During a future authentication session, an authentication device selects test data from the shared secret data to generate sensible output in an authentication process. The authentication process grants access to a controlled resource in response to user input indicating specific knowledge of the shared secret data selected from a presentation of similar sensible outputs.

主权项

1. A computer-implemented method for authenticating access comprising:
sampling digital data from a virtual world environment, according to a sampling function operating on a computer, to generate visible output of a scene where an avatar operated by a client is present; associating the visible output with an identifier for a defined user account; and authenticating access for a later session under the user account, in response to receiving input from a client indicating is which of one or more selections of visible output correspond to events for which the avatar operated by the client was present, wherein the one or more selections of visible output are combined with one or more scenes for which the avatar operated by the client was not present in at least one challenge matrix.