Rick Steves put out an article about using credit cards in Europe. Evidently, the cards which we use here in the USA with the magnetic strip to do not work there - you need a card with a pin number. Have you had experience with this?
If you're bound for Europe, be warned: Your US credit card won't always work. Thanks to new technological advances, old-fashioned tax evasion, and merchants' disgust with fees, your US credit card is not nearly as welcome as cash.
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