Credit Card Security- Check yourself before you wreck yourself.

"You observe,” he pursued as I was curiously examining the piece of pasteboard he gave me, “that this card is issued for a certain number of dollars. We have kept the old word, but not the substance. The term, as we use it, answers to no real thing, but merely serves as an algebraic symbol for comparing the values of products with one another. For this purpose they are all priced in dollars and cents, just as in your day. The value of what I procure on this card is checked off by the clerk, who pricks out of these tiers of squares the price of what I order.” 
Edward Bellamy, Looking Backward-1888…………

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