Software built into the cameras on iPhones and Android phones make quick work of decoding QR codes. How do you do that on a laptop or desktop computer?

Among the many changes brought about by the pandemic is the widespread use of QR codes, graphical representations of digital data that can be printed and later scanned by a smartphone or other device, ...

Two-dimensional barcodes called Quick Response codes, or QR codes for short, are used to store data that devices can read. While QR codes are popularly scanned via smartphones, what if you want to ...

Did you ever watch Star Wars and wondered how people understood what R2D2 was saying? Maybe [Luke Skywalker] would enjoy learning to decode QR Codes by hand, too. While it might not be very practical, ...

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 ...

Posts from this topic will be added to your daily email digest and your homepage feed. You don’t need an app for this —your phone can do it already. You don’t need an app for this —your phone can do ...

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 ...

Among the many changes brought about by the pandemic is the widespread use of QR codes, graphical representations of digital data that can be printed and later scanned by a smartphone or other device, ...

Anatomy of a QR code While it is easy for people to read Arabic numerals, it is hard for a computer. Bar codes encode alphanumeric data as a series of black and white lines of various widths. At the ...