Thanks for the response, and I agree with you by and large. Regarding the exact skin dosage (something the medical field goes to great lengths to minimise), the jury is out as far as i can tell, as testing of the equipment has been miminal. I wouldn't be that surprised if backscatter imaging did turn out to be safe, my problem with the technology is that it is basically untested and has not had its safety validated via independent large scale testing. With any health related screening test (especially one imposed on a massive population) there is a high bar set for causing minimal harm, as there should be. With backscatter screening there appears to be no decent safety checks, poorly qualified screeners, and worst of all, minimal/no evidence that the screening test catches any of the problems it's supposed to. I see it as a pointless radiation dose.