For more than 2,000 years commerce has been conducted on the basis of cash, hard cold currency. Today, however, 90% of global transactions are done electronically, and while cash use is still strong in the retail environment, even there cash use is declining in many economies. In this week’s show we’ve invited renowned author David Wolman (End of Money) and American Banker journalist Marc Hochstein to discuss the end of cash and the emergence of digital currencies like BitCoin. Is there a time in our future when physical cash will be just a memory?