End-to-end encrypted apps have develop into more and more standard over the previous 10 years, with billions of individuals utilizing them each day.
But as Meta plans to roll it out on apps like Messenger and Instagram, governments around the globe are getting frightened.
Without the power to learn any messages despatched, police say they’d discover it tougher to catch and convict criminals, together with terrorists and youngster abusers.
So what’s finish to finish encryption and the way does it work?
Cyber reporter Joe Tidy explains.
With inputs from BBC