On Wed, 1 Jan 2003, Todd Boyle wrote:

Its not enough to put the chips next to the beer. They want to examining the layout of all their shelf space. The cash register data alone, is enough to do this, but it doesn't work very well for shoppers who come and buy chips on tuesday and beer on wednesday. The card lets them associate your whole shopping cart for the month.

It's a nice idea, but they have several people on one card. When my kids are teenagers, they'll have the same card I and my wife have. So they have whole families in that data mix. I'd think they would try to correlate the cash register data with each person - the kids are in the candy corner, the dad is getting the beer and mom is getting the chips. Doesn't seem like a very simple problem to me! Patience, persistence, truth, Dr. mike