Last Friday, the Home Shopping Network started displaying QR codes alongside its products in an experiment designed to attract the "mobile browsing while the TV is on" demographic. Viewers who scan the QR code will be taken either to the network's mobile site or to its app, where information on the product will be displayed along with a link to the checkout page. While scanning QR codes haven't been the most popular activity amongst smartphone users, HSN hopes to drive adoption and eventually have the QR scan add the product directly to the viewer's shopping cart. If this pans out, it could fulfill both the dreams of coach potatoes and the nightmares of impulsive buyers by making purchases just a tap and scan away.