A print piece is a physical thing. Catalogues and brochures can stay in houses or offices for months or years, while Internet ads can disappear into cyber space instantaneously.
Consumers are more engaged when reading printed material, unlike websites, which are often skimmed in as little as a 15 second visit.
Placing QR codes on printed pieces is an excellent way to bridge the gap between print and web. When scanned with a smartphone, the QR code will take you to a homepage or a special offer page that lives on the web.
There is something about print that gives a sense of legitimacy. The saturation of popups and banner ads on the web can be overwhelming and the fear of spam and viruses is enough make people weary of clicking. There is no imminent danger in a catalogue, brochure or flyer.