Case study from +Pure Oxygen on how QR Codes can make conferences more mobile-friendly, earth-friendly, and get 35% response rate. I wish more of the conferences I attend were "thinking mobile first" like AMA!
How we used QR codes to make this year's AMA conference mobile friendly - and earned a 35% QR response rate: http://www.pureoxygenmobile.com/qr-makes-conference-mobile-friendly/
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