Is it possible to use fb messenger as a part of my app? If yes. Is it possible to fetch the messenger messages for encryption and decryption after integration in my app? This is the nature of my current challenge with FB messenger development. I am trying to create an socio-financio cryptocurrency application that embraces neo-crypto(modular), Phone book style profile, DLSeT and advanced blockchain in a P2P network. I believe that this will benefit largely the emerging markets. I need your assistance with FB messenger development.