We have all seen these QR tags about the place. They represent encoded text, a Web address or contact details to name a few. But how do people get a QR design that has a unique little twist?
The answer lies in the error checking of the QR system. In order for the reliable physical reading of the code by optical input, the methods used to generate the result is VERY tolerent of errors and 'poor' marks. This tolerence can be exploited in order to build perfectly functional hybrids from a standard and valid QR code.
Here are a trio of clever QR tags from a TIME Magazine Designer: