"Communism arose as a reaction to a distribution of wealth in which a few lived in luxury while the masses lived in extreme poverty. In The Communist Manifesto Marx and Engels wrote "From each according to his ability, to each according to his need." While the ideas of Marx have been embraced by various states (Russia, Cuba, Vietnam and China in the 20th century), Marxist utopia remains elusive" (Wiki)
Mammon is at work!! And we all know who the god of this world is.
This method of plastic card payment will leave the rich getting richer and the poor getting stuffed.
The plastic process will engender less freedom in society. Where money is free from all big brother constraints, the card will record and register every move and history of your financial life.
The poor will suffer from bureaucratic monitoring and less involvement within a society run by mammon. Freedom has a price tag in this society payable only by those who are rich enough. After all they rule society anyway.