Facebook Messenger users will be notified whenever someone screenshots their message under new changes to the app.
The new feature will be rolled out over coming weeks, parent company Meta has announced to help users “feel safe”.
It will affect disappearing messages, which are automatically removed from chats 12 hours after they have been read, WalesOnline reported .
So when someone tries to screenshot your messages on the encrypted chats you’ll know from now on.
It will also notify users when people try to screenshot on the ‘vanish mode’, which deletes messages as soon as the chat window closes.
The new function is a part of end-to-end encryption on the platform, an opt-in function, aimed at improving privacy on the platform.
Posting on Facebook, chief executive Mark Zuckerberg said: "New update for end-to-end encrypted Messenger chats so you get a notification if someone screenshots a disappearing message.
"We're also adding GIFs, stickers, and reactions to encrypted chats too."
He then shared an exchange with his wife, Priscilla Chan, to demonstrate the new feature. In it, Zuckerberg sends a joke and is notified that "Priscilla took a screenshot" of their chat, to which she replies: "saving that one for later!"
The feature is similar to a long-standing Snapchat function, in which users can send transient messages and receive notifications if they are screenshotted.
Among the raft of software updates announced by Meta, replying and forwarding tools have now been added to encrypted chats.
Users will also be able to save media, edit videos, view verified badges and send GIFs, stickers and reactions in chat.
It said in a statement: "End-to-end encryption protects you and your data from hackers, criminals and other prying eyes.
"We hope these features elevate your private messaging experience as we continue to improve your encrypted conversations with friends and family."
