NFC (Near Field Communication) is a globally used transmission method for exchanging data. Compared to Bluetooth, NFC is only possible over short distances (up to a maximum of 4 in). This guarantees that no third party can access your data which is stored in the patch.
The best-known use of NFC is contactless payment. When you make contactless payments with your credit or debit card, your smartwatch or your smartphone, NFC is used.
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