I always wonder how this chip is supposed to work after it’s been shoved up the rectum of the person who tries to implant one in me.
Some of them are so small they are really nothing more than powder (like those produced by Hitachi:
http://www.technovelgy.com/ct/Science-Fiction-News.asp?NewsNum=939
But I encourage you to make that placement, all the same. Maybe they’ll stop trying. :-)