Facebook has been confounded by 'revenge porn' and it is looking for a way out.

Now, it is starting to tackle this problem by encouraging users in Australia to submit their nude photos to a pilot project designed to prevent intimate images from being shared without consent.

Adults who have shared nude or sexually explicit photos with someone online, and who are worried about unauthorised distribution, can report images to the Australian government's eSafety Commission.

They then securely send the photos to themselves via Messenger, a process that allows Facebook to "hash" them, creating a unique digital fingerprint.

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This identifier is then used to block any further distribution on Facebook, Instagram and Messenger as a pre-emptive strike against revenge porn, a common method of abuse and exploitation online.

"We're using image-matching technology to prevent non-consensual intimate images from being shared," said Antigone Davis, Facebook's head of global safety.

A Facebook spokesman said Britain, Canada and the United States are also expected to take part in the project.

"It removes control and power from the perpetrator who is ostensibly trying to amplify the humiliation of the victim amongst friends, family and colleagues," eSafety commissioner Julie Inman Grant told AFP.

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