I ride alone a lot so it would probably be a good idea to have something like this incase something happened and someone saw from the road. Might have to keep this in mind!
I wear my ROAD ID bracelet every single time I ride off my property. I don't use the website option, but I did list every possible phone number for family members.
I use ICEstripe Elite bracelet. The have the same quality as RoadID, but the prices are nicer. I can't recommend it enough!
Ride Alert is the only one specifically designed to cover both horse and rider (and the entire family)in the one subscription. http://www.ridealert.us