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EFTS transactions may be go together with by methods to validate the card and the card holder. The merchant may manually confirm the card holder's signature, or the card holder's Personal identification number (PIN) may be sent online in an encrypted form for validation by the card issuer. additional information may be included in the transaction, some of which is not able to be seen to the card holder (for instance magnetic stripe data), and some of which may be requested from the card holder (for instance the card holder's address or the CVV2 value printed on the card).

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