
In 2013, Facebook added a new feature to the Messenger app allowing users to engage in Messenger chats while multitasking on other websites. With these "Chat Heads," users are a tap away from continuing a chat without having to constantly switch apps. Chat Heads can pop up on a phone no matter what is being viewed on the screen at the time. Essentially a way to quickly respond to a message sent during a Messenger chat session, the Chat Heads appear on the side of a user's display and show the profile picture of the person that the user is chatting with.
The messaging ...