Before the pandemic, QR codes were largely viewed as a bit of a novelty. Many people didn't know how they worked, and you'd rarely see them in the wild. Perhaps you might spot one on an advertising campaign at a bus stop, or as a way to enter a promotion. However thanks to the pandemic, the humble QR code has seen a revival.Vince Guerrieri's story for Popular Mechanics: https://www.popularmechanics.com/technology/apps/a39048000/history-of-qr-codes/FBI PSA over QR Codes: https://www.ic3.gov/Media/Y2022/PSA220118Listen to Command Line Heroes: https://link.chtbl.com/commandlineheroes_cyoa?sid=s9.podcast.thedefragBecome a member of The Defrag to get ad-free and bonus episodes at our website https://thedefrag.com/ - or become a member of The Defrag+ on Apple Podcasts.Join our Discord: https://discord.gg/rHb7JVHz42Follow us on Facebook, Twitter, Instagram, or YouTube.