[NTAG424DNA] - Configure tags as read-only

[ukcas]

Hello

Is it possible to make the NTAG 424 DNA tags "read-only" using the TapLinx SDK for Android?

Thank you.

#ntag424dna

[ukcas]

Hello,

NTAG 424 DNA can be configured as Read-Only with help of TapLinx SDK. Please check APPLICATION NOTE - NTAG 424 DNA and NTAG 424 DNA TagTamper features and hints, chapter "6.15 Write to CC - using Cmd.WriteData, CommMode.PLAIN" (link). Two things to do to make the transition into Read-only life-cycle:

• Write read-only byte into CC file (E103)*
• Set WRITE access rights of NDEF file to 0xN (N = number of any key from 0 to 4, so write access for the ones knowing that key) or 0xF (no WRITE access for anyone)

* In order to write/change data to CC File, you need to Authenticate before with key 0x00.

Method to use to change access rights:
changeFileSettings(int fileNumber, NTAG424DNAFileSettings fileSettings);

Best regards,

UK