I thought about this issue as well.
I carry medical info in my wallet; it includes drug allergies, insurance info, personal and contact information, and my signed authorization to treat. But my wallet is in my purse, carried in the tankbag or in a saddlebag if the tankbag isn't mounted. I mused about how I could increase the liklihood that this info would be found. The info should be available easily to someone taking care of me, and that means on my body or in my clothing, not hidden away or, perhaps, inside the saddlebag that demounted in the crash and is now a hundred yards down the road.
I decided that I didn't want to carry a memory stick with the info, as someone helping me might not have the presence of mind to look for a data stick, nor a computer on hand to read it. Information in the cloud could be even more unavailable. The arm-mounted pockets seemed a bit much. A helmet label on the front would be seen, but was also just a bit too forward.
I ended up making a second copy of the info I carry in my wallet, and putting it in a small ziploc bag. The ziploc bag lives in the right front chest pocket of my Darien, which I'm wearing every time I'm on the bike. I had
http://www.colorpatch.com/name_patches.htm make a cloth label that I affixed over the pocket; it sort of matches the factory label on the left side. Assuming I'm lying on my back, it should be seen by anyone attending to me:
