On a cold winter's morning, Chileans waiting for a bus could feel some heat, by simply scanning a QR code. For Homecenter Sodimac, a home improvement warehouse chain, Mayo Digital DraftFCB got the company's bus-shelter display to emanate some heat when the QR code on it was scanned with a smartphone. Now if only NYC could get some of these -- with an air conditioning option -- for our bus-shelters.