How about if I wrote the above on a piece of paper and left it on an official looking stand in a shop...yes?
Seen in a shop in Finland:
Join now as a favoured customer and you'll hear always as the first about our fantastic offers and wonderful happenings.
If you want to join as our favoured customer just fill this form with the needed information and hand it to the staff and we will take care of the rest.
I tried asking the store staff but they say it is a different company's problem and they have no idea of how the forms will be used. So far I've had no luck in contacting the company to which the forms probably belong...