Not a bad idea. Never heard of anyone putting that on the tag. The military type dog tags may not have the room for it.

I can imagine the bike being left by the side of the road. When I took the ambulance ride I was able to tell the cop on the scene to please take care of my bike and he was happy to. They actually gave my daughter a really hard time when she showed up to pick it up at the police station. She has the same unusual last name as me, knew who I was, and knew about the accident. Still they grilled her. "What color is the bike?" "He has a lot of bikes. I don't know which one he was riding." And on and on... Ultimately she convinced them that very few people had the same last name and one of them knowing that my bike was there and trying to claim it unless I sent them was pretty unlikely. So they finally checked her ID and let her sign for it.