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Two Factor Authentication is a service used to confirm a user’s identity by combining two different elements. For example, Routee service combines a unique code with a verified phone number. This service can be used as part of an app or a website sign up process to increase security for the services offered. The status of the service is reported under five different categories, pending, verified, cancelled, expired and failed. If an app uses two factor authentication with SMS, it can opt in for Two Factor authentication with Voice if the first fails. This may happen for a visually impaired user.