The Pandemic Brought Back QR Codes—and They’re Not Going Away Anytime Soon

QR codes have been the subject of various cycles of derision over the past 20 years, and yet, walk around today and you’ll find them everywhere: posted on storefronts inviting onlookers to place online orders, or scan a menu for takeout. They’re used to indicate completed health screenings so people can enter schools and hospitals without having to lift a...