The nRF5340 DK supports a Near Field Communication (NFC) tag.
NFC-A Listen Mode operation is supported on the nRF5340 System on Chip (SoC). The NFC antenna input is available on connector J5 on the nRF5340 DK.
NFC uses two pins, NFC1 and NFC2, to connect the antenna. These pins are shared with General-Purpose Input/Output (GPIO)s (P0.02 and P0.03). The PROTECT field of the NFCPINS register in User Information Configuration Registers (UICR) defines the usage of these pins and their protection level against abnormal voltages. The content of the NFCPINS register is reloaded at every reset.