Contactless debit cards work using the principle of NFC or Near Field Communications. This technology uses radio transmission to establish contact when the cards are waved near a POS terminal. So, customers with Contactless debit cards will be able to make transactions by just waving a card instead of swiping it. After this is done, the customer has to enter the PIN to complete the transaction. One big advantage of having a contactless debit card is the fact that the cardholder will also be able to make normal transactions by dipping or swiping the card.
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