I come from a motorcycle background. I am a noob in the skydiving world but some things run the same. I have a lot of friends who work in the er and they all will tell you the same with any victim whether motorcycle accident, car accident, skydiving, etc they try to get as much information as possible on the victim. I consulted with them and many first responders and that is how this came about. All first responders are trained to look for something like this whether it be the sticker, bracelet, necklace, or card in the wallet.
Also, helmets are almost always left on until you get to the er, leaving plenty of time for the first responder to call in the id. In scuba/cave diving it is law that the gear must come with the accident victim so the id is going to be with them the entire time.
All we are trying to do is make it a little easier to do the things we love to do without worrying so much. We cant force you to use our service but hopefully we can help educate you to help yourself or your loved ones.