NFC tags and readers communicate wirelessly with each other over very short distances. Tags store a small amount of data on them that is sent to the reader in the form of electromagnetic pulses.

Eavesdropping occurs when an attacker intercepts the communication between an NFC tag and a reader. Because NFC operates at 13.56MHz, the range of interception is typically very short, often less ...

Unlike NFC, RFID only supports one-way communication — from the tag to the reader — and can’t store nearly as much information. Then there’s the new kid on the block: Ultra Wideband (UWB).

In practice most readers provide more than enough energy so the tag can still be energised despite the resulting inefficiency, but for any NFC tag system to work at maximum efficiency it should ...

The ReadPi’s operation is based on the use of radio waves to identify a specific RFID tag. So, in general, the reader emits a 125KHz frequency through its coils, and if a 125KHz passive RFID tag ...

This appears in notifications as Website NFC Tag. One reader found that they received repeated notifications for a payment service even when their phone was ostensibly nowhere near any NFC device.