Facebook adds an App Lock feature to Messenger on iPhone and iPad, as part of a number of privacy changes for Messenger including a Privacy section in settings (Jacob Kastrenakes/The Verge)

Jacob Kastrenakes / The Verge:
Facebook adds an App Lock feature to Messenger on iPhone and iPad, as part of a number of privacy changes for Messenger including a Privacy section in settings  —  There's a new Privacy section in settings  —  Facebook now lets you add an extra layer of security when opening Messenger on an iPhone or iPad.

via Techmeme