QR Code is a kind of barcode that is a machine-readable optical label. A barcode contains information about the item to which it is attached. The information is stored in the barcode in the form of a sequence of numbers. The information is encoded in a particular sequence, and the code is specified by a particular set of rules. A decoder can decode the information from the sequence of numbers.

QR Code for Android is a free application to read and decode all kinds of QR codes and barcodes. It can scan all kinds of codes, including text, URL, email, Wifi, contact, location, calendar, and more. It is also a barcode generator, which makes it easy to generate QR codes from your contacts, locations, calendars, and more. QR Code is also a price scanner app, which is used to scan product barcodes to see their prices. It can also be used to scan coupons and see the discounts. It is a very powerful and easy-to-use application.