America may not be using cash much longer.<br /><br />This may be convenient for retail chains, but it could be very dangerous for the country's more vulnerable citizens. <br /><br />The Amazon Go store in Seattle, for instance, is a cash-free grocery store where customers can walk out without using a cash register.<br /><br />The money is charged to their Amazon account. <br /><br />Cashless operation can speed up service, prevent theft, and allow companies to collect more info on shoppers. <br />
