The people in them might look and sound real, but the images and audio have been produced using ever-improving AI technologies.
Soon individuals and state players alike will have the power to make celebrities and politicians do or say whatever they want via digital doubles.
It's already being used for pornography, fake news, and memes. But where is this technology heading and how are governments and organisations preparing to deal with the problem?
To find out The Telegraph's Harry de Quetteville speaks with Centroid motion capture, Aphrodite.ai, and John Gibson of ASI Data.
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