When a user opens the app they will be sent a push notification. Simply clicking this notification verifies who they are. Account Key (pictured) is available globally on iOS and Android.

Starting on Thursday, the company announced, users of the Yahoo Mail app on both iOS and Android will have access to a new service called Yahoo Account Key, which uses smartphones to verify ...

Users only need an Account Key to access their email through app.

Starting on Thursday, users of the Yahoo Mail app on both iOS and Android will have access to a new service called Yahoo Account Key, which uses smartphones to verify identities in lieu of ...