Is there a unique Android device ID?

android uniqueidentifier
Tyler picture Tyler · May 7, 2010 · Viewed 1M times · Source

Do Android devices have a unique ID, and if so, what is a simple way to access it using Java?

Answer

Anthony Forloney picture Anthony Forloney · May 7, 2010

Settings.Secure#ANDROID_ID returns the Android ID as an unique for each user 64-bit hex string.

import android.provider.Settings.Secure;

private String android_id = Secure.getString(getContext().getContentResolver(),
                                                        Secure.ANDROID_ID);

Also read Best practices for unique identifiers: https://developer.android.com/training/articles/user-data-ids

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