The Canadian Press and the CBC are reporting that the virtual strip-search machines installed in Canadian airports will have their software upgraded so that passengers will no longer have their nude images presented to screeners. Instead, the technology will project a stick figure with highlights of possible hidden objects. See: 'Naked' airport scans switching to stick figure images - New Brunswick - CBC News.
I expect that passengers who remain concerned about either radiation exposure or the residual intrusion can ask for a manual pat-down. That's what I'll continue to do: if they're going to invade my personal space, I want to look the person in the eye while he does it.