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Is there a unique Android device ID?
In the licensing documentation the android developers mention an easy way to more or less securely identify an android device. They are using android.Settings.Secure.ANDROID_ID.
They say they query the system settings for this. But they don't explain this any further.
How do I obtain the android_id and do I need special permissions for doing so?
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* getDeviceId() returns the unique device ID. * For example,the IMEI for GSM and the MEID or ESN for CDMA phones. * getSubscriberId() returns the unique subscriber ID, * For example, the IMSI for a GSM phone.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main. xml. In the above code, we have taken text view to show device id.
ANDROID_ID is the preferred device identifier. ANDROID_ID is perfectly reliable on versions of Android <=2.1 or >=2.3.
ANDROID_ID. On Android 8.0 (API level 26) and higher versions of the platform, a 64-bit number (expressed as a hexadecimal string), unique to each combination of app-signing key, user, and device.
adb shell sqlite3 /data/data/com.android.providers.settings/databases/settings.db "SELECT value FROM secure WHERE name='android_id'" The android id is changeable with a rooted phone... Insert a android id with:
adb shell sqlite3 /data/data/com.android.providers.settings/databases/settings.db "UPDATE secure SET value='IDHERE' WHERE name='android_id'" It's all in the Javadoc, as linked to by this question you edited 30 minutes before this one! :)
Is there a unique Android device ID?
The "Secure" part just means that apps can't write to it, only read. I seem to recall that this device ID isn't always present; it's populated by the Market as required, perhaps.
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