The full form of QR Code is Quick Response Code. These square codes are machine-readable just like standard barcodes (e.g. ISBN barcodes) that we have been seeing on the back side of books and goods bought from superstore. These square codes can encode any type of textual information. QR codes originated in Japan where they have been in use for quite some time. You must have seen these square codes on various products, on websites and in print media as well.
QR Codes are better than barcode because these can represent URL, text, coordinates and phone numbers etc. Another big advantage of QR Codes is that these can be read using a huge number of smartphones. The phone's camera can scan the code and a QR code reader software can interpret the information for you.
Reading a QR code is very easy. All you need is a camera phone that can take a picture of QR code and a QR code scanner app that can analyze the picture to extract the information hidden inside the code. Both of these things are easily available in most of the smartphones today.
You can use QR codes for encoding pretty much any kind of data. You can put your contact details in a QR code on your business card. This will make it easy for the card user to scan and store your contact details in computer.
QR codes are also being widely used to encode product information. You can stick the product details in the form of a QR code on your products. Customers will be able to easily make note of the details they need by scan the QR code of the product they are interested in.
QR codes can also be pasted on print advertising, flyers, posters, invites, TV ads etc containing: