Nexmo has announced the availability of the Verify SDK for iOS Android and JavaScript operating systems and programming languages. It allows developers to add phone verification with a single line of code for password replacement, 2-factor authentication, or user and transaction verification to their applications.

Verify SDK is a white-labeled SDK that allows developers to manage user identities across multiple devices and platforms without building a complex user management backend. Complimenting Verify API, Verify SDK adds a new level of security by tying phone numbers to unique device IDs, and introduces a subscription model, complementing the unique pay-per-conversion billing method.

With one line of code, Verify SDK delivers user verification and authentication out of the box and saves development and design resources. Verify SDK offers the UX framework for verification right from the UI to collect a user’s phone number, the UI displayed when a user receives a code, and the UI displayed for retries.

On the backend, Verify SDK comes with user management support, so developers do not need to create and manage a database of users and query the database on each login request. Verify SDK also allows developers to verify users via push notifications once they have been verified via SMS or voice. This, combined with an optional unlimited verification subscription payment model, substantially decreases the cost for developers while giving them more flexibility.

Public access to Verify SDK is now available globally for iOS, Android and JavaScript. To learn more go to .