Addressing the needs of some users who share devices, Facebook is now allowing multiple accounts on its Messenger app. The feature is initially available for Android users. If you worry about privacy, the new feature doesn’t allow users to get into each other’s accounts. It can be set with all accounts locked down and needing a password. Or if you have kids that you want to supervise, you can opt to not lock those but keep yours locked so your kids won’t see your messages. The only thing you’ll be able to see is notification count when a message comes in.
Source: Tech Crunch