'QR codes that can read multiple URLs' appear on the Internet
QR codes can only store one piece of data. However, a QR code that can read different URLs depending on the angle has been posted on the Internet and is causing a stir.
Playing with the idea of 'different perspectives on the same story'!
pic.twitter.com/zwRprBp2cj — Guy Dupont (@gvy_dvpont) January 22, 2025
A QR code that sends you to a different source based on the angle.
Below is the QR code created by Guy Dupont . Hold your smartphone camera over it to read the URL of Faux News .
When you change the angle, the appearance of the QR code changes, and you can now read
It can also read the URL for
The QR code that Dupont created is a combination of multiple QR codes, which are then covered with
Wrote a script to interleave SVG layers, this is what the resulting print looks like before and after adding the lenticular lens pic.twitter.com/3CAEhAOEum
— Guy Dupont (@gvy_dvpont) January 22, 2025
After Dupont's post went viral, Christian Walter created a QR code that can read multiple URLs without using a lenticular lens.
If you hold your smartphone camera over the URL created by Walter, the Mastodon URL will be displayed.
Furthermore, when you move the camera over the same QR code, the GitHub URL is displayed.
You can also see how two URLs can be read from the same QR code in the video below.
QR code that can read two URLs - YouTube
According to Walter, each pixel of the QR code is divided in half, with different URLs displayed on the right and left sides. In other words, if the QR code reader first recognizes the right pixel, it reads the URL based on the information on the right side of each pixel, and if it first recognizes the left pixel, it reads the URL based on the information on the left side of each pixel.
