All I could find out is that the PDF viewer i.e. Adobe Acrobat has to be able to convert the used characters into Unicode so a braille printer can handle it. Accessibility features in PDFs
So if you use a suitable font in your form it should propably work.
All I could find out is that the PDF viewer i.e. Adobe Acrobat has to be able to convert the used characters into Unicode so a braille printer can handle it. Accessibility features in PDFs
So if you use a suitable font in your form it should propably work.