This new development will allow developers to build apps where users can opt to receive their verification codes through the WhatsApp app installed on their phone instead of through SMS.
As at Today, many apps give users the ability to sign up using only a phone number; but with this new development, when signing up for a service that requires the user to be verified, you can select WhatsApp as your means of verification, instead of email, SMS, or voice call.
When using a phone number to sign in, it’s common for the app to confirm the user by sending a verification code over SMS to the number provided. The user then enters that code to create their account. This process can also be used when logging in, as part of a multi-factor verification system where a user’s account information is combined with this extra step for added security.
With the new WhatsApp SDK once integrated into an iOS or Android app, developers can offer to send users their verification code over WhatsApp instead of text messaging.