qr
![Brian Piercy](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%230A66C2"><path d="M20.447 20.452H16.89v-5.569c0-1.328-.027-3.037-1.852-3.037-1.853 0-2.136 1.445-2.136 2.939v5.667H9.351V9h3.414v1.561h.046c.477-.9 1.637-1.85 3.37-1.85 3.601 0 4.267 2.37 4.267 5.455v6.286zM5.337 7.433a1.982 1.982 0 1 1 0-3.964 1.982 1.982 0 0 1 0 3.964zm1.782 13.019H3.555V9h3.564v11.452zM22.225 0H1.771C.792 0 0 .774 0 1.729v20.542C0 23.227.792 24 1.771 24h20.451C23.2 24 24 23.227 24 22.271V1.729C24 .774 23.2 0 22.222 0h.003z"/></svg>)
With a newly discovered mathematical tool, researchers are hoping to gain unprecedented insight into the structure of complex knots.
More than 26 million Americans have been directed to malicious sites after scanning QR codes without verification, a practice engaged in by 73% of the
Ever wondered how a QR code works? No, me neither but it's low-key fascinating. (Warning, there is some extremely nerdy shit here.👇 )
:extract_focal()/https%3A%2F%2Fimages.theconversation.com%2Ffiles%2F456420%2Foriginal%2Ffile-20220405-20-kbmv1g.jpg%3Fixlib%3Drb-1.1.0%26rect%3D0%252C23%252C5158%252C3405%26q%3D20%26auto%3Dformat%26w%3D320%26fit%3Dclip%26dpr%3D2%26usm%3D12%26cs%3Dstrip)
Here’s what happens when you scan one of those ubiquitous two-dimensional black-and-white patterns.
China’s mobile payment ecosystem, the largest in the world, is built upon QR codes. But that technology extends far beyond shopping to ease friction throughout daily life. On a recent trip to China, I personally interacted with QR codes 42 times in a single day—to ride the train, to book a workout, to charge my...