The square block shape of QR codes are increasingly appearing on all kinds of marketing materials. From printed catalogues to Coke cans, the codes give access to more product information or special ...

QR codes have become an essential part of modern life, from scanning restaurant menus and making digital payments to sharing contact details and promoting businesses. These black-and-white squares are ...

With over a decade of experience at Which?, Tom covers everything from tech advice to money-saving tips and highlights the best deals during major sales events. QR (or Quick Response) codes are now ...