remote controlled lock
I'm looking for a remote controlled lock. Or more precisely something like a latch or a deadbolt.
It will be for a friend's sons's "secret stash" situated behind a small bookcase on hinges, in a little brick alcove (God knows why that's there...). So there should be no keyholes or any sign of the lock outside.
Since this is a child's project I'm not looking for high secure things, of course it should fulfil the function of a lock, but the key is being battery operated, easy to install and reasonably reliable.
There is no need for many fancy functions, time locks, various users etc, just a remote controller and some kind of latch like thing it operates. 2 keys are needed or 3 tops.
It shouldn't be too expensive and should be available either world-wide, or in Europe or at least be bought online.
I've also though of RFID based solutions, but the wood is around 2 inches thick, not sure if that would be an issue, plus I don't want too much assembly and complications. Simplicity and ease of installation is a focus
I also don't want to hassle with electric cables because A.) I'm lazy, B.) It shouldn't be dangerous to the child and C.) I don't want to undertake serious modifications to the place apart from drilling a few holes and putting some screws in.
I hope some of you will have some kind of handy solution
Thanks for your help
PS.: this is the "unhinged" end of the bookcase and the other pic is the part of the wall which is next to bookcase.
Man, it's nice to visit the site again
Pics of the situation:
http://i.imgur.com/j0LN8FO.jpg
http://i.imgur.com/u9fJK7t.jpg
http://i.imgur.com/vHEMVpU.jpg
=== WARNING DANGER OF TYPOS!===
Arfspeak: calnin cladycomes: you allow her key in themodning
Equals in plain English: cleaning lady comes: you allow her key in the morning