Cryptocurrency Q&A
What signal do credit cards use?
What signal do credit cards use?
SsangyongSpirited
Tue Jan 21 2025
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6
answers
1522
I am trying to understand the technology behind credit cards. Specifically, I want to know what kind of signal or technology credit cards utilize for making transactions. Is it radio frequency, NFC, or something else entirely?
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6 answers
KimchiQueen
Thu Jan 23 2025
The technology behind contactless payment is RFID, which stands for Radio-frequency identification.
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EthereumEmpress
Thu Jan 23 2025
NFC, or near-field communication, also plays a crucial role in facilitating contactless payments.
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CryptoElite
Thu Jan 23 2025
To make a payment, you simply hold your card close to a card reader.
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Nicola
Thu Jan 23 2025
The design of the card reveals its nature: it is a contactless credit card.
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CryptoAlchemist
Thu Jan 23 2025
The card reader's antenna is sensitive enough to pick up a signal from the card when it is within a few inches.
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