I had military type dog tags made out with my info. I often bicyle in secluded places like the Trinity river bottoms and don't always take my wallet or drivers license. I wear my tags just incase the worse happens. I was really outta shape when I started to bicycle but I pushed myself hard and still do. My fear was that I overdo it and passed out or something. I'm in way better shaape but still wear my tags. You can get them online or go to your nearest military surplus store to get them made.
Ernest