I have begun to wonder whether that is a real concern. Of all the pi$$ing & moaning & BS that goes on in the i-club, I do not recall ever hearing of someone even saying that they knew someone who knew someone ... that had that happen to them.
It seems to me that it could, but if the jammer is turned off promptly so that the officer can get a fair reading ... then there is ample room for some self doubt on his part that he might have miss aimed it. I have no idea, just my $.02 worth to waste some bandwidth.