I've been signed as an organ donor for about 25 years now...though I'm in no hurry to donate.

I'm assuming by now every state has a system to tie iin organ donation with driver license applications.

A few decades ago there was a thought that my younger sister would need a kidney transplant in the future, so my brother and I were both keeping track of her progress as we were the suited donors. Happily she reached the point where it's unlikely she'll require a transplant.