More States Are Offering Contact-Tracing Apps—Now if Only They Could Get People to Use Them

Google and Apple rolled out their covid-19 contact-tracing APIs months ago for state officials to use in developing their own covid-19-tracking apps, but adoption has proceeded at a snail’s pace. Just 15 states and Washington, D.C. are currently employing the tech giants’ “exposure notification” tech while a handful…

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