YSK: There is a medical ID on iPhones.

Having a medical ID is very important to have and filling one out on your phone will take only a few minutes. If you're ever in an emergency situation or are having any other medical problems, a medical ID can give healthcare workers or EMS responders helpful and important information about you quickly. Go into your contacts and select your name (should be at the very top) and scroll down and select medical ID. From there you can put in all of your medical information such as a photo ID, allergies, medications, birthday, etc. Once finished it can be easily accessed without even unlocking your phone by selecting emergency and then medical ID.