信用卡的“四宗罪”

The cashless society--a world where physical money is practically obsolete--has, in just a few years, gone from a utopian dream to something like an inevitability.＇ In Sweden, a national effort is underway to take the country cashless within two decades. Throughout Africa, it＇s perfectly common for merchants to accept money through mobile phones by having buyers transfer a specific amount of money to a specific number associated with the merchant.