TeleSign 2FA is a full application programming interface (API) and software development kit (SDK) that allows an enterprise to integrate two-factor authentication into its existing web applications. This product allows administrators to modify their existing web applications to include a drop-down box on the authentication screen from which a user can choose the way of receiving their one-time passcode. Passcodes can be sent to the user either via SMS text message or by phone to a number that has been previously registered.
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