Why would they need to be tested? Don't get me wrong, spending thousands on a generated illustration of a zombie is ridiculous, but if someone has access to the token, they can bequeath that access. They don't need some special mechanism to do it.
Which means that anybody who gets access to the token can steal it and there is no legal recourse for the legitimate owner. That's not exactly what most people look for when they decide what to leave to their kin after they pass away.
