Cash is an exciting and important topic, which has become the subject of extensive debate, especially of late. Cash is also the frequent target of criticism, with claims that it is inefficient, expensive, fosters the shadow economy and impairs the effect of monetary policy measures. Yet despite all of this criticism and the discussion over its future, at just under 80% of all point-of-sale transactions, cash remains the most significant means of payment for the German population. An analys...