Originally Posted by Polishedhead
Having a vault keypad appear when you click a guildbank seems like a brilliant idea. Will help against keyloggers, idiocy etc etc,
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No, this would not help at all against keyloggers.
It is relatively simple to modify the keylogger to track mouse movements to see what numbers user enters. Of course the placement/order of the numpad/numbers could vary but modern computers have enough processing power for simple image recognition it takes to find the numpad before user can finish entering the number. And even if the user manages to enter and close the numpad before the keylogger finds it in real time the keylogger could have just saved a screenshot of the game and use it instead of the real game window to figure out the location of the numpad while user happily thinks he is safe.
Of course the keylogger (and the user) could be confused further by using
CAPTCHA images instead of normal fonts but that would probably annoy users far too much. In this case I'd say cure would be worse than the disease.