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The international consensus is growing: one of the keys to containing the COVID-19 pandemic and reviving a comatose world economy is a novel type of technology.

Daniel Leung says his mostly Canadian company, LivNao, has a ready-to-use version of the concept: a smartphone app designed to automatically identify those who have been in contact with infected people through Bluetooth and other mobile technology – and then tell them to isolate themselves.

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The idea was pioneered by Asian countries that have had considerable success combatting the virus, and now is being implemented across Europe with high-profile support from the likes of German Chancellor Angela Merkel. A recent Oxford University study concluded that the crucial task of contact tracing may be impossible without such programs.