QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode). QR Codes or 3D Bar Codes are scannable barcodes that can hold various types of information.
They can be used in many ways. We suggest it is used as a link to a dedicated website or Facebook page. It is much quicker & more convenient than having to manually entering a URL.
A QR code can be scanned using a smart phone with a QR Reading App. (which is free)
When the QR code is scanned, it puts the contact information into the persons contact list on their phone. This enables you to share more information about a product or service.
If offering incentives & discounts they can give you much more flexibility. They are also a great way in developing communication channels through things like newsletters.