Facebook Messenger launched a pair of neat new features this week, and among those was one that'll sound very familiar to any Snapchat user: Messenger now includes scannable codes that let you add another person as your friend. It was the latest in a long line of features that Facebook very clearly took inspiration from Snapchat on — The Next Web headlined its story about the launch: "Facebook Messenger just stole Snapchat’s best feature." Being Snapchat's "best feature" is perhaps arguable, but the point is that Facebook's source of inspiration here is hard to ignore.