How about those people that are living in a third world country and most of those people are not literate in terms of new technological innovation in our society and do not have the means to buy a smartphone or laptop, are they able to use Bitcoin or other forms of Crypto currency?
actually a lot of the people in third world countries have computers and smart phones. it is not the latest or strongest versions. for example they don't have a core i7 with an expensive GPU or the latest iPhone release but they still have a PC and a smart phone that is cheaper but still does the same thing for them.
in fact a lot of them even have bitcoin in their wallets! they show the most interest in bitcoin compared to others at times. look at India and Venezuela and some African countries for example.