Been looking at Medical ID's thinking about buying one for myself (hypothyroidism). Also thinking about purchasing one for my Mother who is diabete, taking Coumadin and other meds. After doing some looking found temporary tattoos That are said to last around 3 days. http://www.medawareid.com/. Plus now have the idea of just getting a real tattoo with the medical symbol. Instead of having to remember to put it on. But where to place it. Is there a special place that emt and doctors look? just a idea.