The Trump administration wants to use Americans' smartphone location data to help track and combat the spread of coronavirus. Now, a pair of US data companies are making a public pitch to show just how that kind of technology might work.
X-Mode and Tectonix focused on a high-profile case: tracking location data from the phones of people who visited the beach in Fort Lauderdale, Florida, in March -- among them spring breakers who made national news two weeks ago when they ignored warnings to practice social distancing despite the worsening coronavirus pandemic.

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