A new feature in Facebook Messenger means you can simply scan someone else's phone and start having a conversation with them Facebook has already shown us the future of VR selfies and now it's making sure you never have to ask for (or remember) someone's phone number. A new function in Facebook Messenger will let you scan a QR-style code on someone else's phone and immediately add them as a contact. The code appears as a swirly pattern around your profile picture. So whenever you meet someone in the pub or out and about and strike up a conversation - you'll be able to carry it on inside Messenger .