Two comments about available techonogy(I don't know how usefull):
1.At least in Romania and Germany they have Schuko (http://en.wikipedia.org/wiki/Schuko) as a
standard, the pins are 19 mm and the hole in the socket almost as deep as the lenght of the
pins. Someone would have to chop the plug seriously in order to get to the pins, I tryed right
now, and there is no space to do anything without choping the plug/socket. (these schuko will
get replaced, you need such force to pull them out that many times you also pull the socket
from the wall).
2.Does this represent such an inovation that it will get a patent? I remember powering a
socket like that myself, out of curiosity, this is a trivial idea.