The industry is now making a shift from usual barcodes to QR codes, what is a QR code? QR code is a small square box which looks something like a barcode. These days QR codes are used on medicine, tickets, brochures, CD’s, cards, computers almost anything that is a commodity.
QR code works with a QR code scanner which is freely available for smartphones, simply scan a QR code and your phone will take you to a website. Imagine you are travelling and need flight schedules/ status of a flight. You can scan the QR code on the ticket and reach the right correct url to check the status of your flight. Similarly a QR code can be placed outside a house which is available for sale/rent and anyone willing/interested in the house can scan the QR code, see how it looks inside the house (couple of images) and reach the owner/broker of the house.