A fair and effective solution might simply be to render the NPC unclickable until the room is open, thereby forcing players to manually go through the menu options and botcheck. In that case. since the botcheck passwords are various lengths that take longer or shorter times to type, it would randomize a higher or lower chance to get in, yet still leave some element of skill required ... rather than just hitting Enter really fast when the room opens, as it currently stands, which can be done rather easily shall we say ARTIFICIALLY if you get my drift.