Adding a camera to a project used to be a chore, but modern camera modules make it simple. But what if you want to read QR codes? [James Bowman] noticed a $7 module that claims to read QR codes so he ...

Sometimes, we try to capture a QR code with a good digital camera on a smartphone, but the reading eventually fails. This usually happens when the QR code itself is of poor image quality, or if it has ...

It’s hard to believe that something nefarious can lie within a QR code, but it can. QR codes have become a convenience of modern life. Just scan the black and white mosaic with your phone’s camera and ...

As QR codes have become ubiquitous, their proliferation has given rise to new and emerging security risks. More than 80% of US-based QR code users said they think QR codes are safe, but only 37% of ...

A study by the University of Barcelona and the Universitat Oberta de Catalunya presents a mathematical solution to make it easier to read these two-dimensional codes on deformed surfaces, such as ...