I checked out your version of the QR code using Mobiletag on an iPhone and it's spot on. Well done. The http://bbc.mobi/drwho is perfect for this exercise! I hope somebody at the Beeb pays attention! Later this year my book comes out with a QR code on the back cover. It hasn't made it to the printers yet. Today, I'm going to change the QR code so that it points to a "mobile" optimised page on the book's web site. Thanks Terence - just in time!