How Coronavirus Contact Tracing Apps Work | WSJ

The following video is brought to you courtesy of the Wall Street Journal YouTube Channel. Click the video below to watch it now.

Public health authorities, developers and tech companies are working on apps to help us keep track of who we came in contact with and where we’ve been to aid in Covid-19 contact-tracing efforts. WSJ’s Joanna Stern explains the technologies using an 8-bit video game.

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