Well if you want help.. refering to the original poster, post a pick of the lock and key, although that would be foolish becuase someone could nab your key code... But picking you door lock is pretty stupid to.
If oyu want a good Medium lock, try a schlage contractor grade deadbolt that is keyed on bothsides.
So one you can make easy.. the other make medium and work up.
If you want to make it hard, try going ot a lockie and asking for "serrated bottom picking" there you go that shoudl cover ehh.. buot what? 4 months?
Andy