Get a Pay-As-You-Go cell phone to attach to your child. Program the adult phone numbers and ICE (In Case of Emergency) numbers into the address book of the phone. Emergency Responders (Police, EMTs, etc) are taught to look in address book listings on cell phones for ICE numbers. If, when typing in the name, a space is put before the name or the letters ICE, that information will appear at the top of the address book list. (Spaces rate higher in digital alphabetizing.) Emergency Responders will then know who to contact in case a minor child or even an adult are lost or incapacitated.
Thank you to Anita W. for sharing this tip with us!