I would hazard more people have access to a scanner (even the one at work) than own a smartphone. That's probably not true; Reading The US smartphone landscape

I would hazard more people have access to a scanner (even the one at work) than own a smartphone. That's probably not true; Reading The US smartphone landscape (http://www.asymco.com/2011/11/06/the-us-smartphone-landscape/ http://www.asymco.com/2011/11/06/the-us-smartphone-landscape...). Also, Nielsen points out that 43% of all cell phones in the US are smartphones; it's just a matter of time before every cell phone sold is going to be a smartphone. Apple's iPhone 3GS is free with a two-year contract. 62% of users 25-34 years old own smartphones: http://blog.nielsen.com/nielsenwire/online_mobile/generation-app-62-of-mobile-users-25-34-own-smartphones/ http://blog.nielsen.com/nielsenwire/online_mobile/generation... So requiring a smartphone (iOS and Android have a combined installed base of 63 million devices in the US) isn't as whacky as it sounds.