In 1966, World Future Society magazine forecast that “credit cards will virtually eliminate currency by 1986.” A Sept. 26 Professional Numismatic Guild online post was quick to point out that “the recent hurricanes that hit Texas, Florida, and Puerto Rico showed what happens when electrical power is knocked out to ATM machines and there are widespread mobile phone and wifi service outages leaving storm victims with no quick access to cash or cyber currency.” And, what about former U.S. Federal Reserve Chairman Allen Greenspan’s statement, “If in the words of British economist John Maynard Keynes, gold were a ‘barbarous relic?’ Central bankers around the world would not have so much of an asset whose rate of return, including storage costs, is negative.” Are we heading for a time when coins and bank notes will be archaeological curiosities? A 2013 MasterCard survey indicated that about 90 percent of consumer payments value in Canada were transacted using non-cash instruments. A Ma...