It still isn’t clear how easily the coronavirus spreads on surfaces—the CDC says that it’s possible to become infected by touching a virus-covered surface and then touching your face, though it’s “not thought to be the main way the virus spreads.” Still, the virus can last on some surfaces for days, and as businesses reopen, it’s hard for anyone entering a public space not to be hyperaware of all of the places that might have intercepted someone else’s sneeze or cough, from door handles to checkout touchscreens. New technology that doesn’t require you to touch anything could help.

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