On our aircraft the medical staff used to go to town cutting clothing off of unconscious patients in route looking for all injuries. A medical bracelet or in the case of military, dog tags, were always found. I went with the bracelet instead of the dog tags and with the web based information in order to be able to list all I need to list. I was carrying laminated tags on my person and bike, but figured those will not be found by the first responders prior to transport. It doesn't do much good if the police find it during their investigation.
If it isn't there it isn't going to be seen.
__________________
F Thomas
"Life is like riding a bicycle. To keep your balance, you must keep moving."
Albert Einstein (1879-1955)