How much money do you have in your wallet right now? For more and more of us, the answer is none

As people around the world turn to electronic forms of payment, Kara Miller looks at the future of cash on Boston Public Radio.

Cash, as it turns out, has some downsides: it can be easily counterfeited, often carries germs, and even transports traces of cocaine. And then there may be the biggest question of all: Does cash cost you money? Are the funds that we use to print up bills and mint coins excessive? And are we entering a new era of currency?