Microsoft has doubled the number of people signed up for its Passport authentication service, but the majority of people are doing so because of product requirements rather than the allure of new features, Gartner said Wednesday. The number of Passport users jumped to 14 million from 7 million between last August and February, according to the research group. Passport authentication, which is a central element of Microsoft's .Net software-as-a-service strategy, offers a single sign-on that gives people access to Web sites without the need for multiple IDs and passwords.
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