Gatekeeper Systems?

It's unconfirmed, but JU suggests that Gatekeeper Systems may well be our supplier of the shopping carts over at Hannaford.

More research is definitely needed.

UPDATE: Here are some other shopping innovations for your reading pleasure.

I was happy to find out that the inventor of the pet rock did something worthwhile:

Silicon Valley inventor George Cokely - the same guy behind the Pet Rock - has come up with a modern solution to one of the supermarket industry's oldest problems: stolen shopping carts. It's called Stop Z-Cart. The wheel of the shopping cart hold the device which contains a chip and some electronics, when the cart is rolled over a certain distance away from the store, the shopping cart owners know about it.