So, let’s say that at some point in the hopefully distant future, the second law catches up to me, some random part of my body just craps out and stops working right, and I die.
Luckily, through the power of foresight, I have a post-mortem plan! Despite the chaotic, hellish merry-go-round that is life, there are still some parts I like about it, and I’m not ready to give up just yet. I have made arrangements to have my body cryogenically frozen immediately after death, to minimize further cell damage, and to be woken up at some point in the future, when they have the technology to cure this kind of thing.
The problem is, that the future is a really long way away, and I need someone on the other end to bring me back to life, so I can start doing stuff that isn’t spending hundreds of years in a tube again. Assuming that humanity hasn't progressed to the point where there are just reanimation stations on every street corner for whatever reason, repairing 80-somewhat years of damage to a human person is going to take time, money, and resources. Someone has to have a pretty good reason to want to reanimate some stiff from the 21st century. And if I don’t have that critical man on the inside, then I’m essentially going to stay dead until something gets unplugged, and I start to decay past the point of possible re-animation. I could have some sort of message go out, but I have no idea if anyone would have the backwards-compatible tech to even receive it anymore, like sending a telegram to an iPhone, and even if they did, they could just disregard it as a hoax. I could have someone else pass down a message from generation to generation, but that could be distorted really easily, and the gravity of it would probably wear off to the point where even if someone still remembers, it would just be as, “Oh, I was supposed to resuscitate so and so! Eh, I’ll do it later.” I could stockpile some sort of monetary reward to whoever wakes me up, but the awareness of that could also fade, and because of inflation, the amount could be laughably small, or even completely unusable, like confederate money. I need some sort of reasonably-foolproof way to make sure that someone, anyone, brings me back to life, so I can continue to enjoy the future.
To be clear, I’m not super picky, nor am I aiming for a certain date. As long as I get woken up at all, more than 100+ years in the future, I’m happy. Also, in this hypothetical situation, I’ve died of natural causes, not any specific disease or injury, just general cellular decay. My brain is still intact, as well as most of my important limbs and organs, they just need a tune-up. I’m still all in one piece, and for the sake of convenience, let’s say that they put me somewhere safe, but still accessible.