From here, Messenger will invite you to choose ... only devices you currently have set up with the PIN. That's all there is to it for personal chats: Once updated, you can chat away with friends ...

Developers are now able to create ... of Messenger. Then open the widgets board and navigate to the widgets picker by clicking the “+” button at the top-right of the board to pin your widget.

With Messenger Rooms, users can create a "room" and video chat with up to 50 people at a time. You can even add people who don't use Messenger — all you have to do is make sure that they have a ...