It seems to me I read about some kind of medical record service where they store your records in some kind of useful electronic form and give you a dog tag to wear so a medical provider can access those records. Don't know much about it, but it would seem like a useful thing. Far more useful and secure than paper records would be.
I've read about those services, they have been talked about on these forums too. You have several issues, most of those services use their own special software which means if the company goes out of business or gets bought by another or changes the file structure in a new version then you may not be able to retrieve those records anymore.
Then there is the issue of the Dr/EMT isn't going to just stick a usb drive in their computer, too easy to get a virus.
I was surprised that when registering our kids for school,they took our copy as word, they didn't ask how or who to verify with.