Hi, can you give me a hint how to make the tag readonly after writing? Help is appreciated.

Hi @romellfudi

Can we add password protection on NFC write tag? i want develop like NFC tag only write from my application, not other application can write on that NFC tag,

yes but read NFC can possible on all other applications.
Thanks(_)

How to read serial number of the nfc tag?

App with your library crashes on Android 12 with "Targeting S+ (version 31 and above) requires that one of FLAG_IMMUTABLE or FLAG_MUTABLE be specified when creating a PendingIntent."

Platform: Mac OS
version: 12.0.1
reason: build failed

Warning: Mapping new ns http://schemas.android.com/repository/android/generic/02 to old ns http://schemas.android.com/repository/android/generic/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/addon2/02 to old ns http://schemas.android.com/sdk/android/repo/addon2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/repository2/02 to old ns http://schemas.android.com/sdk/android/repo/repository2/01
Warning: Mapping new ns http://schemas.android.com/sdk/android/repo/sys-img2/02 to old ns http://schemas.android.com/sdk/android/repo/sys-img2/01

Task :app:processDebugManifest
/Users/matthew/Downloads/github/FudiNFC/app/src/main/AndroidManifest.xml:15:5-40:19 Warning:
application@android:label was tagged at AndroidManifest.xml:15 to replace other declarations but no other declaration present

Task :app:processDebugResources FAILED

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:processDebugResources'.

A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
Android resource linking failed
/Users/matthew/.gradle/caches/transforms-2/files-2.1/222fb1e9b4241bd7b141674dfe2701ed/core-1.8.0-alpha02/res/values/values.xml:105:5-114:25: AAPT: error: resource android:attr/lStar not found.

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 11s

the build failed, it's seem that you use the "+" for the version of androidx.core:core-ktx, it should be 1.6.0.