This idea has been around for at least 10 years, because I tried to get one from a company that had something similar to this – may even have been the same outfit – but they went out of business (after taking my money!). The only down side I can see to this approach, as opposed to a medic-alert type bracelet or necklace, is that God help you if you lose your wallet. All of that information will be a treasure trove for an identity thief. That is one reason I do not keep an extensive list of contact and personal information in my wallet.

An additional caveat – paramedics and first responders are trained to look for, or at least notice and respond to, the various medical alert bracelets. They would probably not have the time to go through your wallet, if indeed they could even find your wallet after a serious accident.