Slashdot: RFID-Equipped Robots Used as Guide Dogs

There is an article from Slashdot discussing a new project developing RFID-Equipped Robots Used as Guide Dogs. One possible implementation might be "RFID-enabled robots mounted on mobile carts which will welcome blind persons at the entrance of a supermarket and guide them through the store". If I needed a guide dog, I think I would prefer the furry kind, but this is certainly interesting!