Microsoft is using additional verification methods such as a short code sent to the user's mobile phone, which is then entered in addition to the password, or by asking the user to supply additional information, such as an alternative email address. With two-factor authentication, a user logging in to a service or device supplies a second piece of information in addition to a password, thus making it impossible for another party to gain illicit access to the user's accounts without all the separate pieces of information. "It's your choice whether you want to enable this, but for those of you that are looking for ways to add additional security to your account, we've worked hard to make set-up really easy." "With this release you can choose to protect your entire account with two-step verification, regardless of what service (or device) you are using with your Microsoft account," wrote Eric Doerr, Microsoft Account group program manager, in a blog entry announcing the secondary authentication. Following similar initiatives by Apple, Google and Facebook, Microsoft is enabling two-factor authentication for its Microsoft Account service, the log-on service for many of its online and desktop products.
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