WhatsApp probably wants to replace SMS and two-factor authentication services with a new function. Like users Twitter Turns out, WhatsApp users will receive a code directly through Messenger to confirm future login or account changes. Otherwise, various applications and providers will always send them via SMS or external application. For some time, the service should be limited to a single service.
Because the function was discovered in Instagram. In future, the user should be able to select WhatsApp as a 2FA option in addition to SMS or third party apps. There is no information about when and when this feature will be rolled out. Instagram may want to test it with a select few users before everyone can access it.
Both Instagram and WhatsApp belong to Facebook. The company puts users in its own ecosystem when they use the 2FA option via Messenger. If the WhatsApp experiment is successful, this function may also be of interest to other services.
The first signs were already visible through a change in the terms and conditions, causing outrage among many WhatsApp users. In the last update, the developers anchored the communication between users and companies in the guidelines. Accordingly, third parties may also use the Services in the future and provide 2FA or other services through WhatsApp.