Ye me too,but not sure what id put on it other than allergic to penecillin. As crohn,s is my only other issue. Should probaly get one as an allergic reaction could be fatal i guess mmm i probably should...
I have one but in necklace form. I mainly wear it if I'm traveling. Since my meds change often I just typed out my med list fairly small and then taped it on the back of the necklace rather than dealing with any engraving. You can also add your medical info onto a USB port.
I've created a medical ID on my iphone with details which can be accessed from the emergency dialler without unlocking my phone, a friend of mine that works in my local hospital has told me that any paramedics will always check this as well as checking for any bracelets or similar.
I've heard people with medical conditions say they keep info on a disk or drive, but a hospital won't insert an unknown device into their systems. You need it accessible another way - paper, jewelry, and that phone idea is interesting.