I love using QR Codes for what I believe their intended purpose is — to transfer a short string of data to somebody’s smart phone. Specifically, a URL for a responsively designed web site. Single-purpose mobile optimized web pages are ok in some circumstances too, but that’s a topic for another post.
There is no more efficient way to get a person to open a specific web page on their smart phone from the physical world. In fact, nothing else comes close. Not augmented reality. Not Google Goggles Search. Nothing can touch QR Codes for sending a person to a specific web page on their smart phone from outside their smart phone.
