There is a very easy way to avoid being scanned - request special assistance.
Not so.
I am disabled but nonetheless expected to hoik my shoes off without the benefit of a chair, or to stand with my arms spread like the Angel of the North while some oik fiddles around my ankles, shouting at me to keep my arms at 90 degreees to my torso.
They are not all like that.
I have already posted my thanks to security personnel who used common sense. It was months ago.
There are some. But not enough.