Plastic money will become more and more in our lives, so frauds can not be ruled out. Almost all of us have at least one card, but some of them will fall in our hands, of different kinds for different uses.
The photo shows the control we have to do to save her from at least that. This test is used to verify the authenticity of the card with the Luhn algorithm.
Walter Cavanagh holds 1.497 credit cards and holds the Guinness record as the man with most credit cards in the world. The road is now open to demolish his record.
