Many apps like Holister, Expedia, & Air Canada use "session replay" to record screens to see how users interact, but @zackwhittaker found that this practice is rarely mentioned in privacy policies & can inadvertently expose sensitive data. https://techcrunch.com/2019/02/06/iphone-session-replay-screenshots/
Original tweet: https://twitter.com/DuckDuckGo/status/1101131660299550721