One solution is to give the money to their governments, a very unsatisfactory proposition in many ways.
Another is to find imaginative ways to do the distribution, maybe via mobile phones, something which is getting almost universal, is close to each individual and already involves monetary payments. In the long run, we're all dead. John Maynard Keynes
A individual carbon quota distributed world wide would suffer the same fate: most ordinary people in the world will have no use for it, as it has no barter value between individuals, so the quotas will end up being collected by local oligarchs and dictators (in developing countries) and corporations (in developed countries), wich will be indistinguishable from distributing quotas to individual countries or regions based on population size in the first place. -- $E(X_t|F_s) = X_s,\quad t > s$