I wish more dog shows would do what Westminster does. Westminster they scan dogs at will for the chip numbers of the dogs. They say they do this to verify the dogs in the ring are the actual dogs. The first time they scanned one of mine, I didnt know they just do this at random. Good thing I had his number on my shot records.
As people that show know, you have to take your shot records with you to shows to be viewed by the vets if asked. Its a good idea to make sure your microchip number is on those records. With Zubin and Galina for their heath certificates to go into the hospitals, they put their chip numbers on their too.