The quick trick on your iPhone that could save your or your family's life in an emergency

Today celebrates the 30th Birthday of one of my supported charities (London's Air Ambulance).  Doing what needs to be done as quickly as possible makes all the difference in an emergency.  But did you know there is a trick on your iPhone that could support emergency services if something ever happened to you or your family?  It takes less than 5 minutes to set up, could save your life and is called Medical ID.