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danger with a Wi-Fi card is that without entering a PIN, your bank account will be at least - Less than Rs 2,000 can be withdrawn.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

First of all, let us tell you that Wi-Fi enabled credit-debit cards are also called contactless cards. With such a card, up to Rs 2,000 can be withdrawn from a POS machine without using a PIN. For example, if you have a Wi-Fi credit-debit card in your pocket, thugs can withdraw money by touching the POS machine in your pocket. The range of such cards is 4 cm. 

Such a card may be called Wi-Fi Credit-Debit but does not work through Wi-Fi. Such a card works on NFC (Near Field Communication) and RFID (Radio Frequency Identification) technology. 

Such a card has a chip that is attached to a very thin metal antenna. The POS machine receives the signal through this antenna and the same antenna gets power from the POS machine through the radiofrequency field. In such a situation, a maximum of Rs 2,000 is withdrawn from your account just after coming in contact with the POS machine. Learn how to protect a Wi-Fi credit-debit card from fraud in the next slide… 

Now the question is, if you have a credit or debit card with a Wi-Fi chip then how to keep it secure. The first task is not to hand over the card to the shopkeeper while making payment in a hotel or shop. Swap in front of you and check the message after the transaction at the same time. 

Another task is to wrap them in aluminum foil paper if you have such a card. Or you can use a metal wallet to protect it. Apart from this, RFID blocking wallets are also available in the market which you can use.

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WiFi is a technology that provides network connectivity using the radio web. We use the Internet through this.

WiFi is simply the popular Wireless Networking Technology name. This means that it is a trademark of the WiFi Alliance. It is also called the family of radio technologies. 

An adapter is created as a hotspot for a WiFi connection, which is usually a wireless router and the rest of devices such as computers, laptops, mobiles, games councils are connected for internet access. 

Wi-Fi is the name of a popular wireless networking technology that uses radio signals to provide high-speed Internet and network connections. 

A common belief is that the full name of WiFi is "Wireless Fidelity", but this is not true. Wi-Fi is just a trademark phrase used only for brand names. 

Whose words are derived from the words Wireless and Fi IEEE 802.11x. Wi-Fi means IEE 802.11x.