QR (Quick Response) codes are two-dimensional barcodes that can be read with a smartphone or tablet using a QR code scanning app. They are often used as a way to facilitate user interaction and provide information or access online content quickly and conveniently.

There are several solutions that use QR codes, some of which include:

• QR code point-of-sale terminals: These devices allow customers to make payments with credit or debit cards by scanning a QR code with their smartphone or tablet.

• Digital Menus: Restaurants and other establishments can use QR codes to provide customers with access to digital menus instead of printed menus.

• Access to events: Event organizers can use QR codes as