-MarkM-
That's not the point. The hacker will have no opportunity for any guesswork. If they managed to get your pass, fine, but now they have to guess a proper transaction within the entire space of allowed rules I could possibly write on the first attempt to transfer out, or else they fail. The system trips the first time an invalid transaction is made. If you make a weird rule, there could be as low as 1/10^6 or 1/10^7 probability they guess it but you'd still have some options when transferring coin.
If this software existed I would definitely make one of these transfer rules and change it often. I would buy it shit. I would pay a bunch for this software.