https://techcrunch.com/2020/06/15/whatsapp-finally-launches-payments-starting-in-brazil/

After months of talks and trials, WhatsApp has finally pulled the trigger on payments in its app. Today the Facebook-owned messaging service announced that users in Brazil would be the first to be able to send and receive money by way of its messaging app, using Facebook Pay, the payments service WhatsApp owner Facebook launched last year.

WhatsApp says in its blog post that the payments service — which currently is free for consumers to use (that is, no commission fee taken) but businesses pay a processing fee to receive payments — will work by way of a six-digit PIN or fingerprint to complete transactions.