For better and a (lot) worse most of the TV / streaming device platforms are Android-derived and have access to emoji keyboards if not intentionally disabled, even on TV form factors. I realize it is a wide spectrum of users and a long tail of devices, but at some point again it isn't a technical reason that we are banning emoji from passwords but a political and lowest common denominator reason.

I'm not trying to invalidate your personal experience. You've seen a lot of good social reasons users probably "can't" be trusted with emoji passwords. but at a purely technical level the number of OSes in 2023 that can't pop up an emoji keyboard if asked is incredibly slim and the number that can't have an emoji keyboard in user space as a software addon is even slimmer. If a device doesn't support at least UTF-8 encodings in 2024 that's an entirely different can of worms (and probably a bad sign for the security of the device itself).

Both the Xbox and PS4+ have emoji keyboards. Apple TV has an emoji keyboard. Almost every version of Android TV and Samsung Tizen and Roku and Fire OS and ….

Go ahead, tell me you have a lot of customer support problems that you don't want to support emoji in passwords. That I can believe. I can't believe it's a technical problem in 2023. Emoji are universal enough now in 2024 that OSes are broken if they can't send/receive emoji and don't have some sort of keyboard to input them. Even if we are still turning off the emoji buttons on password fields because we don't trust users to do it for social reasons rather than technical ones.