This video showed the monk (Lp Ong) inserting golden needles into the skin of the human.
Interesting!!!
The needles , unlike the talismans are considered to be "living", as it can travelled from one part of the body to another part of the body, so it is belief that the body has to be made suitable to host them.
Check it out:
Check out all range of interesting amulets at:
http://www.flickr.com/photos/skybeliever2000