@georgetakei there was a company trying to sell devices to the military that could do this in the 90’s. They turned out to be a total fraud, basically divining rods in almost empty plastic cases with a radio antenna sticking out the front (IIRC there were some insect bits inside).

They did fool Tom Clancy enough that he included the device in his novels. He later apologized for it.

I’m guessing someone’s been reading some Clancy novels recently.