> Compare with the proverbial suitcase full of cash. From a security perspective, it has the interesting property that transactions involving one don't have to

> Compare with the proverbial suitcase full of cash. From a security perspective, it has the interesting property that transactions involving one don't have to be publicly recorded and processed on a public, global, openly accessible peer-to-peer network in order to complete. Hence why governments around the world are pushing towards cash free societies. Physical cash is where most illegal (whether you think it's the good illegal or the bad illegal) transactions happen.