A QR Code is a 2D barcode (most of the ones you see in stores are 1D, i.e. lines not boxes) that can point to a URL and specifically designed for smartphones to utilize. They are most often used to point a customer to business’s online site. Mine on this page points to my homepage. The goal of the QR code is to make it easy for mobile devices, phones especially, to quickly view your information on the web.
QR codes are best used when either you know your customer has a smartphone or the information is useful but not required. The Android Market uses these codes to provide am easy way to install new apps. They can do this because they know their ‘customers’ have a smartphone. If your product does not require such a device, you can not make that assumption. I instead you can post the QR code along with an email or sms number so your feature phone customers are not left out.
Do you have a QR code strategy?