Canada will soon roll out a Covid-19 tracing app for smart phones, developed with help from BlackBerry and Shopify as the number of cases topped 100,000.

Prime Minister Justin Trudeau told a daily briefing it will be “crucial” to increase testing and contact tracing going forward as pandemic restrictions start to be gradually eased.

As part of that effort, he said “a mobile app that will notify users if they’ve been exposed to Covid-19” will be made available to as many as 30 million Canadian smart phone users in early July.

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