First, let me make it 100% clear that I do not support the use of SPO.

However, a question that arises to me is why, if you can have systems that do not generate nude images of people outside the checkpoint, the virtual strip-search MMW machines are being introduced within the checkpoint. Either the passive system is no good and does not detect what it should (and therefore should not be used) or it is good, and can be used without privacy concerns within the checkpoint.

Anyone have a valid explanation???