Get real people: It is all about destroying the Black Economy and maximizing the Tax Take. Why else would the Danes tie the transactions to the Citizen's Social Security Number?

Coincidently, my wife took her car to the gas station this morning to fill up. The gas station's charge card system was down and chaos reigned, fortunately she had cash to pay

It doesn't occur to the advocates of a cashless society that a terrorist organization or enemy that can trigger an Electromagnetic pulse can destroy the whole cashless system. I live in Florida, an area subject to hurricanes. These can destroy communications systems. Previously I lived in the Mid West, an area subject to tornadoes, same potential result. We keep a cash reserve to insure we can work through such a natural or man made disaster