Originally Posted by
urbanknight
I'm not all that worried about having my body stolen, so the driver's license number isn't needed. I want them to know who to call in an emergency (wife and the relative most likely to give me a compatible organ), that I have asthma (may clue them in to the cause of my state), and my insurance ID so they don't worry about getting paid while deciding on how much energy and resources to use on me.
The idea of using the drivers license number is to allow them to easily obtain you full name, address, height weight and see that lovely picture they took at the DMV. They won't get all of that from your insurance id, and minimizing the chances that the wrong person goes the the ER with your insurance information sounds like a good idea to me. There may be some benefit to having the ER folks know this before your relatives get there, especially if those relatives are hysterical/emotional when they get there.