Some establishments might not accept your credit card unless you have a computer chip embedded in it. More and more places are moving from the magnetic-strip credit card to the new system of "Chip and PIN.β In the changeover in technology, some retailers have falsely concluded that they can no longer take swipe cards, or signature cards that don't have PINs.
For the time being, both the new and old cards are used in shops, hotels, and restaurants, regardless of whether they have the old credit and debit card machines or the new Chip and PIN machines installed.
In the interim between traditional swipe credit cards and those with an embedded computer chip, you can get a four-digit PIN from your credit card's issuing bank before leaving home, or call the number on the back of each card and ask for a four-digit PIN.
Keep an eye out for the right logo displayed in a retailer's window. You want Visa or MasterCard, not Maestro, Visa Electron, or Carte Bleue. Know that your Amex card will work where an Amex logo is displayed, but the card is not as widely accepted as Visa and MasterCard.
As a last resort, make sure you have enough cash to cover your purchase.
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