QR codes have yet to conquer the US and Europe but are prevalent in mobile phone-crazy Japan. Denso Wave, a Tokyo-based tech company, invented the nifty little two-dimensional bar codes as early as 1994. And they are everywhere now in Nippon: magazines and newspapers, billboards, clothes, beer cans, maps, business cards, cigarette boxes etc. etc. Scanning the QR code you see above should lead you… → Read More