Generating Device-Specific Serial Number [duplicate]

Answer 1

From Google Developer's solution in solving issue with PRNG, getting unique device serial number via reflection:

http://android-developers.blogspot.com/2013/08/some-securerandom-thoughts.html

/**
 * Gets the hardware serial number of this device.
 *
 * @return serial number or {@code null} if not available.
 */
private static String getDeviceSerialNumber() {
    // We're using the Reflection API because Build.SERIAL is only available
    // since API Level 9 (Gingerbread, Android 2.3).
    try {
        return (String) Build.class.getField("SERIAL").get(null);
    } catch (Exception ignored) {
        return null;
    }
}