Thanks to a Stanford student, Andrew Aude, the creator of the tool Cycript, could be used to discover this little secret, as we see the capture.
The operation seems easy, we just have to add a credit or debit card In addition to setting up a PIN code to secure our payments. Then with him P2P system (Peer-to-peer) the transaction will be done. David Marcus being the former president of PayPal, which now runs Facebook Messenger, this step makes more sense. On the other hand we do not know if a fee will be imposed for the transfers we make and so in this way they will have some benefit.
Finally it seems that this new feature of Facebook Messenger is ready to work in U.S in a few months. Taking into account that Facebook has imposed its messenger application, detached from the main App, it has enough ground to make this system warm among the users of this social network. Without forgetting that it is not the only application that allows this system, we also find another one like Yaap money, which is already in use.
And you won't use this system among your friends?