A free business idea. Google Analytics for printed flyers

In case somebody was looking for an business idea:

The manager of a small dentist clinic was telling me he had setup virtual phones and web pages so that he could track the effectiveness of his pamplets and advertisements.

But he said it was very complicated to do, and he would have been interested in paying for a solution. Basically he wanted a 'google analytics' tool that was integrated with flyer printing and delivery.

If anyone is interested, or already doing this, let me know and I'll put you in touch with the guy (and the google words he searched trying to find it).