In a world of easy credit, it's so simple to swipe a card and amass a pile of belongings without ever thinking about the credit card itself.8. The Number Has a Hidden Meaning
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You're at the supermarket checkout and it comes time to pay. You kindly present your credit card and the snarky sales assistant snaps back, "ID." While most people begrudging present their driver's license, trying to repress the feelings of being treated like a criminal, it is not actually a requirement of credit card companies to have retailers confirm your identity. In fact in some states it's illegal for merchants to request your ID. All the major credit companies have this policy. Here's what VISA has to say
"Although Visa rules do not preclude merchants from asking for cardholder ID, merchants cannot make an ID a condition of acceptance. Therefore, merchants cannot refuse to complete a purchase transaction because a cardholder refuses to provide ID. Visa believes merchants should not ask for ID as part of their regular card acceptance procedures. Laws in several states also make it illegal for merchants to write a cardholder's personal information, such as an address or phone number, on a sales receipt."
This is Mastercard's terms of agreement
"A merchant must not refuse to complete a MasterCard card transaction solely because a cardholder who has complied with the conditions for presentment of a card at the POI refuses to provide additional identification information, except as specifically permitted or required by the Standards ."
So if you don't want to show your ID, don't. If the merchant refuses to accept your card, you can complain directly to the credit card company knowing you are in the right.3. The Expiration Date is a Fallacy
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Your credit card number is much more than just gateway to a big television, fancy vacations and gas for your vehicle. It's also an algorithm than proves whether the card is real or not. The last digit of the card is known as the "checksum" and is used to validate the card using the Luhn algorithm. The math trick is relatively straight forward and is simple enough to calculate in your head. Here's how it works.
- Take the number of any credit card.
- Double every second digit starting from the right.
- Add these new digits to the remaining, un-doubled digits.
- The result should be divisible by 10. If it's not, it's a fraudulent credit card.