Tandora Meanwhile there will be and is no way and never has been any way to enforce entry to public toilets in general on an everyday basis other than through intrusive and arbitrary means.
The 'policing entry to toilets' is a very familiar theme, and has been countered so many times that it's surprising to see it reappearing.
The fact is that while you're right to say
there will be and is no way and never has been any way to enforce entry to public toilets
the key word is 'enforce'.
There have been separate men's and women's toilets since I-don't-know-when.
The system worked. Males used the men's, females used the women's.
There was never a need for security guards, cheek swabs, display of genitals.
It worked because of respect and trust.
People mostly respected single-sex spaces.
It was accepted that any man in the women's toilet [who wasn't there to carry out a task like cleaning or plumbing] no matter what he looked like or what he was wearing or how he identified, had no right to be there.
'The good men stay out so the bad men stand out'
What and/or who destroyed the respect and trust which for decades guaranteed that single-sex spaces were exactly that? And why? Why did the insistence on using the toilets designated for the opposite sex become such a huge issue in such a short space of time?
The puzzling and relentless focus of the trans rights movement on toilets is going to be a really interesting chapter when the social history of the 21st century is written!