Going cashless is a reality that businesses of all sizes face every day. NCR Small Business' Chris Poelma and Fortune reporter Robert Hackett join our roundtable to discuss the real-life applications of cashless-payment technology. Both agree that going cashless is a necessity for survival in the current retail climate. We break down the six categories of cashless payments currently available to merchants around the world. Plus, how do cryptocurrency and security factor in when considering a cashless world of the future? Then, Poelma tells us the simple steps to taking any business cashless.