Very nice! It doesn't feel to me that it's really hidden though, since plugging it in will give everything away. How about a hidden switch on the mouse without

Very nice! It doesn't feel to me that it's really hidden though, since plugging it in will give everything away. How about a hidden switch on the mouse without which the USB stick isn't connected to the hub? Or how about a mercury switch that will only connect the USB stick when the mouse is upside-down? Not quite as good but less likely to be detected.