Get Static NFC Tag Id with HCE mode

by

Why do some phones have static UID and some do not? Is this chipset related?

That depends on the chipset and the implementation of the NFC stack. As far as I’m aware of, there are three different scenarios used by various Android NFC devices:

  • The device has a secure element and uses the static UID of that secure element.
  • The device generates a new random UID whenever it is turned on.
  • The device generates a new random UID on every activation by an external reader device. I.e. whenever an external HF field is applied to the NFC antenna of the Android device.
  • The device has no secure element but still uses a static UID (typically not unique), e.g. 0x01020304. [Thanks to ErikM for pointing this out.]

Is it possible to get a fixed UID?

Typically, you can’t influence this. Specifically without modifying the Android device firmware (changes to the NFC stack) it’s definitely not possible. See this answer for a method to set the UID value on Broadcom chipsets through modifying the libnfc-nci library.

I need it to authenticate the device.

Don’t do this! See this answer for more information on that.

More Related Contents:

  1. Host-based Card Emulation with Fixed Card ID
  2. Editing Functionality of Host Card Emulation in Android
  3. Emulate Mifare card with Android 4.4
  4. Android Unique Serial Number
  5. Is there a unique Android device ID?
  6. How to find serial number of Android device?
  7. Programmatic Views how to set unique id’s?
  8. Serials on NFC Tags – truly unique? cloneable?
  9. Is Secure.ANDROID_ID unique for each device?
  10. Android app enable NFC only for one Activity
  11. Bluetooth pairing without user confirmation
  12. Android: How to programmatically access the device serial number shown in the AVD manager (API Version 8)
  13. Getting started with Open NFC emulator
  14. Get NFC tag with NDEF Android Application Record (AAR)
  15. Android: Changing NFC settings (on/off) programmatically
  16. How to prevent NFC tag cloning?
  17. Same serial number on several android devices. Adb is useless. How can I change the serial number?
  18. Secure element Access Control on ICS 4.0.4
  19. how to send string from one activity to another without starting second activity [duplicate]
  20. How do disable paging by swiping with finger in ViewPager but still be able to swipe programmatically?
  21. How to enable Google Play App Signing
  22. Failed to load map. Error contacting Google servers. This is probably an authentication issue
  23. Example communicating with HandlerThread
  24. Android Music Seekbar is not working (Idle)
  25. Retrieve Google Access Token after authenticated using Firebase Authentication
  26. How to dynamically query the room database at runtime?
  27. How to hide one item in an Android Spinner
  28. How to debug on a real device (using Eclipse/ADT)
  29. Start new Activity with onClick() in RecyclerView
  30. Auto playing vimeo videos in Android webview

Leave a Comment