Just in case-

When I go out kayaking, I make a point of leaving my phone and my wallet home on the grounds that I don't want to lose either one should the boat overturn. True, there are zippered pockets in my life jacket, but I get a little paranoid about losing things in rough conditions. I did make a point of photographing my driver's license with the cheapo camera I got to go paddling, so that if something happened to me and I couldn't talk, a rescuer might stand a chance of finding identification information on the SD card.

Took a somewhat less water-vulnerable step today just to be on the safe side. I ordered one of these- a standard wrist-strap RoadID. It's got my name, year of birth, town of residence, blood group/allergy info, health insurance member ID, and emergency contact phone numbers on it. That should be enough for the ambulance crew or the Coasties in the event of an incapacitating incident, either on the bike or on the water.