I don't know how true this is, but allegedly someone that is perceived to look like the opposite sex, can be arrested and jailed for just looking like the opposite sex.
I was informed the beginning of the week, that one of the recent rulings DeSantis has signed, makes it so that LGBTQI + the rest of the alphabet can be jailed if they look like the other gender. Even heteros can be jailed.
For example, if you are a straight woman with short hair, thin and relatively flat chested, wearing non feminine clothing (not tight pants / shirt but wearing a loose fitting outfit) and pretty much perceived as a male at first glance, you can be arrested for allegedly being trans. Same goes with being a straight man with long hair (ponytail), curvy to the extent that you could possibly have breasts, wearing tight shirt and trousers, you too can be perceived as trans and arrested.
My mother told me the other day that one of her friends from back north had a friend come down to Florida recently. The third party friend brought her daughters with her. I don't know the exact ages of the girls but they are high school level students. Each on opposite ends of the girl spectrum - although both straight, one is a girly girl (long hair, makeup, dresses) while the other is a tomboy (short hair, men's clothes). The tomboy plays for the school basketball team so she's tall and thin. When the family was on vacation, the mother refused to let the tomboy go in to spaces alone. No bathroom alone, no store alone. Because she feared the safety of the daughter, as the law the governor has signed, could make this child become a parolee, simply because she went into the women's bog to do her business and someone thought she was a transman.
Much like going into a restaurant yesterday and one of the staff was a teenage boy, very long hair, feminine looking. My mother thought he was a she before he opened his mouth to take our order. Sure, he was a pretty young man, but if someone thought he was a man dressed as a girl, potentially any customer could report him as being trans. Even though this is no proof of his sexuality or what he was trying to make people think he was.
Ultimately, there is no proof for anyone, as long as someone else thinks you're not the gender you are, you can be put in the nick and good luck trying to get out.
I did find this article -
https://www.cnn.com/2023/05/17/politics/desantis-signs-anti-trans-bill/index.html and read it to my mother. She said that's roughly the idea of whatever he signed that can get you locked up. How both ideas mesh together, I don't know?