Almost all my rides are solo on rural roads out here in the high desert. It seems that at least once on a ride, I thank the good Lord for keeping me safe so far on the ride and ask Him to continue doing so. Today, just in case I'm on a ride and He's busy with more important stuff, I ordered a RoadID ankle bracelet. I went with an ankle bracelet because when it warms up, I'll sweat more on my arms than on my ankle. Besides, I hate wearing a watch, so I doubt I'd like a bracelet.
Pretty good bargain at twenty bucks, plus shipping. They even donate a portion of the proceeds to one of ten charities. I selected the Wounded Warriors, a most worthy cause for those who sacrificed so much for those of us here at home.
You are allowed six lines. I went with (1) name and birth year; (2) city, state, country; (3) SO's phone number; (4) brother's phone number; (5) medical provider and number; and (6) medical info, (i.e., diabetic t2-O pos blood). Now, I'll no longer need to carry my driver's license/medical card/slip of paper with contact info. (The helpful hints on the RoadID web site says that driver's license numbers are pretty worthless and don't really add any useful information in emergency situations. If the DMV is closed, then there is nothing a EMT can do with the info on the face of a driver's license.)
For those of you who frequently solo, probably worth the minimal expense.