What @Ucy said, might be a thing for the future - a currency that relies not completely on internet and electricity but let us see what development we can see in such a project if they really work out something worth using.
A currency that allows you to use it without the Internet or completely without electricity is almost any fiat currency. It was invented long ago.
Well, just in general, a rather strange topic for discussion, but what if ... What if "1" and "0" disappear from the memory cells ... What if the quartz in the processor goes on vacation ... Well, it's really crazy to discuss, agree ?