Researchers at TU Wien in Vienna have created a QR code so small it can only be read with an electron microscope. The code measures roughly 1.98 square micrometers, with individual pixels about 49 ...

These days, it's easy for anyone to take out their phones and scan a QR Code to see a food menu or to pay a bill. But, QR Codes can also make it easy for scammers to access your personal information.

According to netizens, red packets containing an RM5 note and a card with a QR code have been randomly delivered to houses in certain residential areas. While the money is real, the QR code is where ...