Why the popular video app faces being bought out or banned in the US. Chris Fox is joined by the BBC's North America technology reporter James Clayton to discuss the history of the app and why Donald Trump appears determined to ban it. Alex Stamos, former chief security officer at Facebook, discusses whether TikTok is really a security concern. Eva Galperin, director of cybersecurity at the Electronic Frontier Foundation, explains why banning an app is tough to do. Vishal Shah from Instagram touts his TikTok alternative 'Reels' - one of the platforms hoping to attract TikTok users.(Photo: TikTok logo, Credit: Getty Images)

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