For people who are active or have special needs, Road ID is a great product and service. Road ID is a wearable doodad that lets emergency responders know who you are and who they should call. There is even an option that allows you to keep an online profile with lists of your medications, allergies, and more.
Best of all, they now support the Apple Watch. They’ve got several products that will work with Apple Watch bands. If you're active without identification or have a medical condition that you want to make sure first responders are aware of, check these out.