Yeah you can sometimes tell, but I dont think anyone else notices tbh
Theres a coffee shop i go to regularly and when i use the small toilet i always see it in the mirror. Very harsh lighting
I shower in the gym every morning with no problems, although its quiet anyway. There's one other guy in the gym who has had a HT. How do i know? I know what to look for lol
But i reckon 99% of the time, you would never know
My dad does't even know Ive had one haha