Great how-to article for making more attractive QR Codes from Mashable:
The QR code: A thing of beauty or an eyesore? The magical barcodes that can be scanned by a smartphone to launch an offline-to-online experience are often criticized for their black and white checkerbox appearance. Those who doubt that QR codes will go mainstream are quick to point out that the look of QR codes will deter marketers and advertisers from using them.
Fortunately, QR codes are malleable and can be redesigned in truly extraordinary ways, while still maintaining their scanability. The truth is, QR codes no longer have to be checkerbox in appearance. We’ve entered a new phase of “designer codes” that can be integrated into marketing campaigns in an attractive way that isn’t an eyesore.
For more visit: HOW TO: Make Your QR Codes More Beautiful.