Number Verification API is a standalone product from Deutsche Telekom for silent authentication (slient-auth).

Number Verification

Offer your users faster and smoother account access by automatically authenticating them via the mobile operator using their smartphone's data connection. This improves the user experience and increases the conversion rate.

The Number Verification API is standalone Silent Authentication product built using CAMARA standards. Number Verification authenticates your end-users using a mobile data session and without the need for one-time passcodes (OTP) through SMS, Voice, or Email.

The Number Verification API improves service security by simplifying user authentication, removing the need for extra mechanisms such as one-time passwords (OTP) sent over SMS, Voice and email. There are several key benefits of using silent authentication: • Once an end-user enters their credentials, the rest of the authentication process happens in the background; they do not need to retrieve OTPs from a separate application, providing a seamless user experience. • It removes the exposure to toll fraud for developers, typically present with SMS and Voice OTP scenarios.

Some use cases where the Number Verification API is useful

• **Protecting against spam**, by preventing spammers from creating multiple accounts • **Monitoring suspicious activity**, by forcing an account user to verify ownership of a number • Ensuring that you can reach your users at any time because you have their correct phone number

Benefits of the Number Verification API

See how our Number Verification API helps businesses like yours succeed.

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