What is the text about? Does cash-free mean people don't use cash any more? What kind of "cash" will people use? Is it possible for people to change the nature of money? Why (not)? Without cash, how will people do shopping in the future? Why do people want to give up cash? What are the benefits of the new technology? How can people deposit money in the future? How can people transfer money then? Do you like the idea of an electronic funds-transfer system? Why (not)?