The "outside box" was a blessing. I had no idea what I was going to use to water proof this thing outside. I was at my local home improvement store and just wandered the aisles until this thing popped up in front of my. its a "weather proof gang box" Its intended use is put it over an electrical outlet outside of your home. Once I had all the components inside and had it all working correctly I siliconed the box shut. So I could get it open if I had to, but at the same time...its shut really well - and completely rain proof.
Well I presumed that it was just the reader and the LED but if someone got into it could they send serial down one of the wires or something to get it to open. I presume even if this is the case you would need to know the code to be able to send it so you might as well program your own card.
I presume from this analysis, there is no way someone can electrically 'brute force' open the door that you know of by using the connections that there are outside.
The waterproof outdoor outlet box sounds like a good find...
Mowcius