FILE - This Jan. 14, 2015 photo shows a sign outside Yahoo's headquarters in Sunnyvale, Calif. Yahoo is trying to phase out passwords with an update to its mobile application for its email service. The renovated app released Thursday, Oct. 15, 2015 for iPhones and Android devices will include an option called "Account Key" that allows people to sign into their email accounts by pressing on a notification sent to their smartphones instead of typing in a password.(AP Photo/Marcio Jose Sanchez)
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