What is a QR Code?

A QR Code can be defined as data hidden within a square or rectangular symbol to minimize labor and time expenditure. By interpreting it with a reader and transferring the contained data to an electronic environment, both labor and time are saved. A QR Code is a two-dimensional barcode that can be read by smartphones. It allows for the encoding of more than 4000 characters in a two-dimensional barcode. QR codes can be used by users to display text, open URLs, save a contact to the address book, or create text messages. Because it can contain many visual materials and link structures, the QR Code has suddenly become indispensable in the marketing and advertising sectors. We frequently see QR codes, which are preferred in various fields, on billboards at stops, in magazines, newspapers, and on business cards.