Bot Checking NPCs

[DemonicPrince]

Hey, I've been wondering if there's a lot more bot checking npcs than just Bot killer from eAthena, I'd really love something that you just whisper a npc, or talk to one, and if it's a bot it pops up and check, and if it's a player, it's simple to get finished and move on with your day.

Players on the server I'm on don't want to be distracted by npcs when they're doing their own stuff, they want to have their lives undisturbed, I was wondering, what bot checking systems do you guys have in your servers, and how well do they work to get the bots, and not the players? I don't like ones that pop up every so and so kills to -everyone-...