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If you are also one of those who have a WiFi credit-debit card, you need to be very careful, because the danger with the Wi-Fi card is that at least Rs. 2,000 can be withdrawn from your bank account without a PIN. The big question is, if you have such a credit or debit card, how to avoid cheating.

How a WiFi credit-debit card works

First of all, let’s tell you that wifi credit-debit cards enabled are also called contactless cards. Such cards can be withdrawn from the POS machine without using pins up to Rs 2,000. For example, if you have a Wi-Fi credit-debit card in your pocket, thugs can touch the POS machine in your pocket and withdraw money. The range of such cards is 4 centimeters.

Such cards may be called Wi-Fi credit-debit but do not work through Wi-Fi. Such cards work on NFC (near field communication) and RFID (radio frequency identification) technology.

Such a card has a chip that is very thin attached to a metal antenna. Through the same antenna, the POS machine gets a signal and the same antenna gets electricity from the POS machine through the radiofrequency field. A maximum of Rs. 2,000 is removed from your account only when it comes in contact with the POS machine. Learn how to protect Wi-Fi credit-debit cards from thugs in the next slide.

Now the question is, if you have a credit or debit card with a Wi-Fi chip, how to keep it safe. The first task is not to give the card in the hands of the shopkeeper while making a payment in a hotel or shop. Swap in front of you and check the message that comes after the transaction.

The second task is that if you have such a card, wrap them in aluminum foil paper. Or you can use a metal wallet to save it. In addition, there are RFID blocking wallets in the market that you can use.

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