RFID is a short-range technology, and would thus be unsuitable for your application. First, there is no way to shoot a transponder into a human being—and even if you could do so, there would be legal issues to contend with.
Second, the transponders that would be implanted have a read range of approximately a foot, so it would not be useful for tracking someone.
Third, if you could Taser someone, why not simply do so and then arrest that person for breaking and entering? Why bother RFID-tagging that individual and then removing the tag?
—Mark Roberti, Editor, RFID Journal
What Is the Current Value of the U.K. RFID Market? »