As a sign language user, I wouldn't say it has anything near significant adoption, but I would agree in terms of writing systems for signed language, it's one o

As a sign language user, I wouldn't say it has anything near significant adoption, but I would agree in terms of writing systems for signed language, it's one of the most well known ones. That said, I've never, ever seen it used in practice by people that use signed languages. Other than an oddity on the internet here or there.