Will MAC id of an android serve as a unique identifier?
<p>I'm looking for a constant identifier from an android device whether it's phone or tablet or some other. I checked and found 4 options IMEI, IMSI, Android_ID and MAC ID. The first 3 are found not reliable as they can be changed in one or other method.</p>

<p>So can we trust MAC ID of the device considering the device has any sort of network in it, whether it's bluetooth or wifi, can it be changed?</p>

<p>Also will 2 devices have same MAC ID ?</p>

<p>OR can i make a unique id from all the above. Please suggest me a method to get a unique identifier from an android device. I need to to recognize all the users of my app.</p>
