[15155]

NXP and STM make NFC<->I2C EEPROM chips that are <$1 which can easily be used to transmit data from a mobile device directly into the target.

https://www.nxp.com/products/rfid-nfc/nfc-hf/connected-nfc-t...

https://www.st.com/en/nfc/st25dv-i2c-series-dynamic-nfc-tags...