Fake Videos Threaten Trust

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New AI tools let you make public figures appear to say things they've never said. Will remaining trust in online content disappear? Plus, is there a case for sharing more data about ourselves with smart devices? We hear from Poppy Crum, chief scientist at Dolby Labs. And, Karishma Vaswani reports on how India's clampdown on large banknotes has helped digital payments. Presented by Rory Cellan-Jones, with BBC tech reporter Zoe Kleinman, and Akshat Rathi, from the Quartz website. (Image: Abstract representation of a video streaming site with pictures emerging from a laptop screen, Credit: Getty Images).