Not sure if anyone has mentioned or heard of this yet. its becoming a new trend in "medical alert" tokens to use the I.C.E. message on cell phones. I just come from a meeting today regading public safety, and the trend for all cell phone owners is this. You make a listing under contacts on you cell phone called ICE which stands for In Case of Emergency. First responders will be routinely checking for this information , at accidents, unresponsive patients, etc, Under the ICE listing you are to list a few phone numbers for emergency contacts.
ICE link