Why the U.K. contact tracing app failed

The video discusses the UK's initial approach to developing a contact tracing app, opting for a centralized model instead of the decentralized Apple-Google model. The UK faced technical challenges, particularly with iPhones, leading to a low success rate during trials on the Isle of Wight. Privacy and data security concerns also arose. Eventually, the UK decided to adopt the Apple-Google model. The video compares the UK's experience with other countries like South Korea and Germany, highlighting the importance of download rates for app success.

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