can you use an Android server device
Are you asking if you can run Traccar server on Android device? Possibly if you can get fully featured JVM there.
this is exactly what it will be good because it is silent and unobtrusive
i am not a programmer so can a little more clarification
I can't provide any more clarification because I have never tried anything like that. You would need to have quite a bit of technical knowledge to do this. If you don't, you should probably forget about this idea.
if this can be done