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In the context of an HTTP transaction, basic access authentication is a method for an HTTP user agent (e.g. a web browser) to provide a user name and password when making a request. In basic HTTP authentication, a request contains a header field in the form of Authorization: Basic <credentials>, where <credentials> is the Base64 encoding of ID ...
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Two-step authentication involving mobile phones and smartphones provides an alternative to dedicated physical devices. To authenticate, people can use their personal access codes to the device (i.e. something that only the individual user knows) plus a one-time-valid, dynamic passcode, typically consisting of 4 to 6 digits.
Training for educators: educators start here! A five-part, 97-page training for professors and other educators who want to run Wikipedia assignments for class, with introductions to core Wikipedia policies, editing basics, and an overview of best practices for designing and implementing Wikipedia assignments.
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Smart Traveler Enrollment Program. The Smart Traveler Enrollment Program (STEP) is a service provided by the U.S. Department of State for U.S. citizens and nationals traveling and living abroad to enroll their trip with the nearest U.S. embassy or consulate. [ 1][ 2][ 3]
If there's something unusual about your sign in or recent activity, we'll ask you to go through another verification step after you've entered the correct password. This is an important security feature that helps to protect your account from unauthorized access.
Figure 1. Probabilistic parameters of a hidden Markov model (example) X — states y — possible observations a — state transition probabilities b — output probabilities. In its discrete form, a hidden Markov process can be visualized as a generalization of the urn problem with replacement (where each item from the urn is returned to the original urn before the next step). [7]