Will it make any sense for people to exchange paper currency in the future? I don’t think so. Paper notes and coins will be valued only by collectors and numismatists. Already, a remarkable $9 trillion a year is transacted with mobile payments in China (the United States is about $1 trillion). Currently, cash accounts for merely 2 percent of the value of all transactions in Sweden. The future is not hard to forecast—it is already in our faces. More….