The strip search machine scanners take longer to screen a person than the WTMD. This will slow things down for passengers in the aggregate, even those passengers not subject to the strip search machines. The process-driven delays from strip search machines are known, but being tolerated by the relevant decision-making governmental and corporate bodies.

Given the WTMDs can be set to "random" alarm regardless of metal quantity, this means that a proportion of all passengers are de facto being selected to have the strip search machines screen them as part of primary screening.

The talk of this being just for "secondary searches" for passengers is really Orwellian double speak from the involved parties, particularly as a certain minimum percentage of all passengers at CPH are being targeted to be sent to the slow, strip search machine scanning regardless of what is on their person when walking into the WTMD.

The scanner software won't show the average screener at the airport a person's naked image, but the image of the naked body of a passenger is probably what is being used by the software to search for anomalies on persons screened. How often the naked image of passengers is captured for review by a real person is an open question, one for which there will be no honest and accurate answer from governments.