The death of cash

In certain European cities, it might make more financial sense to keep your money under the mattresses or in a huge vault like in the 80s Hindi movies. Banks there don't want your cash anymore. Why this sudden aversion to cash? Banks like European Central Bank is trying to push growth and the Swiss National Bank wants to save trade from a strong currency. Further, lending rates in the countries are abysmally low unlike in India where it is in double digits. Saliha Nasline breaks down the story.