The device reportedly occasionally emits small amounts of gamma, and needs shielding. Residential use will not happen for a while until it is proven safe for unattended home use.
If it needs an attendant to monitor it, then it needs to be industrial-scale (minimum multi-MW) for it to be cost-justifiable. This is a good sign, because trying to scam major corporations on something like this is not something a flim-flam guy would try.
Rats, yes, gamma radiation would be a problem for home use. I would expect the gov’t to basically outlaw home installation (and use in motor vehicles, etc.) if there is a gamma radiation risk, and with some justification. I wonder if the design can be refined and fail-safed to ensure that gamma radiation cannot be produced? Let’s hope so.