i do have my wallet on me but there are times on long trips where i stash it in the tank bag, and i figure if i come off the bike so might the tank bag. or if i am wearing pants without pockets it goes in the jacket. what i am concerned about is say the wallet is separated from me. i don't know if it was here but i remember the story about the guy who crashed his bike and while waiting for the medic to arrive someone stole his bike. the way i see it is that i am sure there is someone out there who will see me on the side of the road and go easy money take the wallet and leave. my ultimate concern is not so much for medical reasons though that does play a part. it is my concern that if something does happens if there is a phone number on a tag that says dad some person might call it and let them know. i choose to ride a bike and i know the risks, and bad shit happens. i just want to take every step i can to minimize those risks and alleviate the concerns of those who care for me. that is why i liked the dog tag idea. light, tends to stay on you, and easily changed or upgraded if a phone number changes. i mean 30 bucks for a laser etched tag is nothing if it helps even the smallest amount. i probably wont do the tat, but i personally like the idea of a functional tattoo.