In the event of an accident

When I came home from the hospital, along with my discharge instructions, were two ID cards with some of my information imprinted on them. The cards also have the name of the company that makes my new boobies. I asked Mr. Pincushion what the cards were for. Do you know what he said? He said they were my new ID cards for the implants and something about how I have to go online to register them! Isn't that crazy? I've heard of registering appliances like the stove or refrigerator for the warranty but my boobs? I thought maybe the cards were for me to keep in my purse so that in the event of an accident or if I lost one or both of my new boobs, the doctors/police would know what type and size they were! But no, my plastic surgeon said I don't need to carry the cards on me. Apparently, they give them to patients in the event of a catastrophic event where the hospital or doctors' medical records are destroyed and you need to know what size/type you have. However, I think I will keep a card in my purse in case the former does happen.