Any kind of alphabet which has this one-to-one
relationship to speech sounds. It could be something like Captain Kidd's code
in "The Golden Bug".
Hmmm, Piotr. Phonetics doesn't need to be boring. With
lots of motherly enthusiasm and a child with a learning disability, the
motivation on the mother's part is already present. The reason I
recommended the IPA is because of the one vowel to one symbol
relationship which to me is much simpler than any other phonic stuff.
What did you have in mind when you suggested "any