We've started a program where we provide (at no charge) a basic mobile site with a QR code. The site features a youtube video (hopefully of the band in question) and a link to like their facebook page - it combines the mobile (the phone) and the social (facebook) aspects.
The QR code is then printed on the poster with a note to the effect of "take us with you".
We're working on the way to even get directions to the show - but of course, unless a band is playing in the same place over and over, something like that would have to be updated show by show - so we figured facebook invites would take care of that.
For anyone who would like to see the demo - using your smart phone and its QR code scanner -
We've decided to offer this as our community service - bands just give us two links (youtube video and their facebook page) and then we create and host the site and create the QR code and send the code to the band for printing. So for now, we're just wanting to help as many performing groups as possible.
Frankly, I get tired of all these marketing guys telling bands to use QR codes - but what they overlook is that the content has to be mobile friendly - people get PO'd when they can't really see what it is because its a regular site. And the band thinks its too complicated or they take a chance and try it but it doesn't do anything and they think its the QR code that fell flat.
Would love to know what you think of something like this for shows -