Shaved Handles are illegal in Australia because you have to still have a manual way of opening the doors....but there is a simple way around it , that i think , would suit you , what you do is , get an internal door lock a use it on the out side.....these are the only couple of pictures i could find...but you should be able to work it out
http://home.iprimus.com.au/s_edmiston/DSC00006.JPG
http://image-cache.boostcruising.com/database/genthumbs/622/830/readersrides/files/post-4784-11468150191839977263.jpg