[PapaBear3625]

Rossi himself claims that his device works by "unknown nuclear reactions" (from his patent application), so he can't explain how it works, or how safe or unsafe it is.

You don't necessarily need to understand the details. You need to put gamma, X-ray, and neutron detectors around it and see if they detect anything. Keep it up for a month. If nothing, then you can have at least some small degree of confidence that it's not emitting dangerous radiation.

[NewinTexsas]

You don't necessarily need to understand the details. You need to put gamma, X-ray, and neutron detectors around it and see if they detect anything. Keep it up for a month. If nothing, then you can have at least some small degree of confidence that it's not emitting dangerous radiation.

He says the shielding stops the rays. He is going to have to transport it as a radioactive device.