I watched the Dreamcatcher movie a while back. It is a nice movie involving young boys, now adults, who have been gifted psychic abilities by an alien. That alien, in the hiding, looks like a human being and waits for the right moment to defend the Earth from other hostile aliens.
In the movie we see a gun with a tracking device in it, I like the concept (not that this is something new). You would never suspect that your gun is traceable:
You might also like: