For those of us who weren't paying attention, over the last few years, scientists around the world have been one-upping each other in a bid to create the smallest QR code that can be reliably read.

Scientists created a tiny matrix that stores data by etching its grid into a thin ceramic film with a focused ion beam.

In today's digital age, we do many things online. From sharing contacts to digital payments and document verification, everything is happening digitally. QR code has played an important role in making ...