Funnily enough faxes are still used quite actively in businesses (at least in Australia). When I ran my bookstore they were the primary means of communicating shipping information and issues with packing lists. The number of times one of the big suppliers like Random House or Adshack, the nickname for Alliance Distribution Services / Hachette, made mistakes large and small, ugh. I loved my bookstore days but I also don't miss them.
Cash is something that Libraries (or at least the various ones I work at) won't phase out anytime soon. The reason being that electronic means of processing payments makes it difficult for homeless and people with financial problems of whatever stripe to access what we believe are important resources such as computer usage, printing, faxing (heh), scanning and emailing. Cash is something everyone has access to, can carry and use. As an aside people are generally amazingly generous with their cash. They'll hand over a $5 note for $2 worth of printing and refuse the change. We've some charity tins up the front. They'll just point to one and tell us to donate it towards them. And this happens all day every day. It restores a little bit of faith in humanity seeing these constant acts of kindness.