this is a great example of unwanted brand loyalty:

one of the major supermarket chains in holland called Albert Heyn has this thing called a ‘bonus card’, that has a barcode on it for the person at the register to scan so you can get discounts on specific products.

now, a ton of people started to create their own bonus card by using this little application that, upon entering the number underneath a barcode, generates the appropriate barcode stripes. you can print these and it works when scanned.

this became a full fledged movement and just now has been officially forbidden by the supermarket, which is a real shame when you see the galleries dedicated to these little pieces of art :]

+ <a href='http://www.wittkampf.nl/bonuskaart/gallery.htm' >GALLERY ONE</a>
+ <a href='http://www.wittkampf.nl/bonuskaart/gallery2.htm' >GALLERY TWO</a>

(<a href='http://www.wittkampf.nl/bonuskaart/' >full site here</a>)