Mike Fethers, Assistant Buyer for Tesco Gaming (what a great role!) sent me a digital copy of the poster and QR code we'll be showing in-store. Mike believes that this is the first time the mobile site and QR codes have been implemented at a store level.
So if you're in a large Tesco branch on Friday, wander over to the console games section and look out for the Nintendo DS Top 40 Chart poster featuring the QR code (click poster for larger version):
Here's the code if you want to try with your smart phone and a barcode app now: