Instagram - QR Code
Instagram QR codes and a fun story how I used them : http://techcrunch.com/2014/02/04/how-a-startup-accidentally-hacked-shark-tank-with-a-qr-code/
Instagram QR codes and a fun story how I used them : http://techcrunch.com/2014/02/04/how-a-startup-accidentally-hacked-shark-tank-with-a-qr-code/