Five QR Code Myths Dispelled
QR Code myths abound. Consider QR Code quality. A recent article describes a graphics design technique that makes QR Code less obtrusive and more “harmonious” with the graphic it accompanies. The QR Code examples in the article blended into the advertisements so well, you might not even notice them. We had concerns from a barcode quality standpoint—but if the reader might overlook them altogether, what’s the point of using a QR Code at all?
QR Code can be modified or customized to make them unique to a particular ad or brand. Maybe it’s a matter of semantics because of course QR Code can be modified graphically to make them more attractive. But where is the threshold of readability? What amount of modification can be tolerated before scanning is impaired? Although the ISO specification can tell you where the line is, the smart phone camera “scanners” are not ISO compliant and therefore the threshold of acceptability is unknown…and what is the point of a QR Code
that doesn’t work, no matter how beautiful or brand-identified it is?
QR Code can only encode url’s. Because QR Code is so often used to represent a URL, lots of people believe that’s all it can do. Interestingly the inventor and owner of QR Code technology, Denso Wave, now part of Toyota, created QR Code to mark automotive parts. Originally QR Code was invented to track Toyota’s manufacturing supply chain.
QR Code can be “hijacked” or redirected to a pirate site. This may again be a matter of semantics, but strictly speaking the QR Code cannot be “hijacked” or modified to contain different information or point to a different URL. Websites can be hijacked but the information contained in the QR Code is very secure because it is a static, printed image. And the structural technology in a QR Code makes it even more unlikely that a highly modified or customized QR Code could accidentally direct the user to an unintended destination. More than likely the adulterated QR Code would simply fail to scan.
QR Code myths abound related to the quality of the printed symbol. Simple mistakes include failing to provide the necessary quiet zone around the symbol—yes QR Codes have quiet zones, just like UPC and Code 128. Another common myth is that QR Code can be printed in any color or color combination. Although QR Code is much more tolerant of color than UPC, there must be sufficient contrast differences between the QR Code symbol and its background for the scanner to be able to detect it. And what exactly is that contrast difference? Well, since smart phone cameras are not manufactured to an ISO specification, it is virtually impossible to predict whether or not a particular QR Code will work as intended on every smart phone that will attempt to scan it.
The last of the QR Code myths is perhaps the biggest of them all—that QR Code is just a fad. Of course it is a fad—but not as a data entry device. QR Code is without doubt a fad as a marketing tool, but all marketing tools are fads—that is the whole point. As a data entry device, QR Code is a pretty good tool, but not the only one, although many people refer to any 2D symbol as QR Code and any 1D barcode as UPC (and any photocopier as a Xerox machine, etc.).