This device is what makes it impossible to discern exact shape of Humanist ships through visual means, as well as more difficult to target them with weapons. It modulates the electromagnetic field around the ship to create an opaque field of plasma. I believe we could replicate this technology to make our ships harder to hit as well, if we understand enough about the nature of magnetism. We cannot use the device directly, as it has to be attuned to ship's hull properties.