4 Lessons From the Improbable Rise of QR Codes

Tech that seems totally useless can suddenly become crucial — like during a pandemic

The first time I saw a QR code, I scoffed.

It was 2010 and the code was in the bottom corner of a movie poster. To scan it, I had to download a special app on my Iphone. The software was still buggy and fiddly — I was…