I have it on my license also a notirzed note in my wallet signed by 2 witnesses (my faimly) that way if family can't get there to sign there is no delay and the parts needed spoil. If you don't have a directive they can't do anything with out a family siggy. Also if any member says no it can cause problems that could up hold the harvesting. Please if we learned any thing from The Terry Savio case it's paperwork every where ,On you with a lawyer and make sure your family all knows and it has been witnessed but others that they Know.