FAQs
English (US) 日本語 | Japanese 中文 | Chinese (Simplified)

[NTAG424DNA] - Configure tags as read-only

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Show  only  | Search instead for 
Did you mean: 

[NTAG424DNA] - Configure tags as read-only

‎08-23-2023 05:03 AM
810 Views
ukcas
NXP Employee
NXP Employee

Hello


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

 

Thank you.

#ntag424dna

Labels (1)
Labels
0 Kudos
Reply
1 Reply

‎08-23-2023 05:06 AM
809 Views
ukcas
NXP Employee
NXP Employee

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

Reply