Are you seriously proclaiming to the world in general that you've absolutely no idea about the socio-economic impacts that a cashless society will have, and their potential for exclusion as well as inclusion within a social sphere?
Are you seriously so naive in reality that you cannot picture some very important men (you know, the kind who invite the Zuckerberg's of this world to behind-the-doors meetings, politely suggest some features that should be included, and then ensure that the resultant IPO is very much in his favour, markets be damned) looking at Square, and its ilk, and imagining a world where our "homeless hero" cannot be a part of society?
This is not to mention that "the homeless", are by their very definition, already excluded from a large part of society, and that the American model has seen a dramatic increase in social exclusion in the last thirty years, which trend-wise, seems to lead to the logical assumption that it will probably increase in the short term. (How short-term might depend on several issues, however that's a different thread)
Oh, to be young and such a waif! The blind optimism of a useful idiot!
“Technique has taken over the whole of civilization. Death, procreation, birth all submit to technical efficiency and systemization.”