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Facebook testing encrypted chats in Messenger

Facebook testing encrypted chats in Messenger

Facebook is adding to its Messenger app an option for encrypted chats that can only be read on the devices on which they are sent or received. 

Users also will be able to set a timer to control how long the message remains visible to anyone, the company said Friday. 

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The “secret conversations” feature, which is optional, does not work across different devices. So even if a person has Messenger on a phone and on a computer, the...

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