I'd assume you'd just use the unicode chess symbols, nowadays? (https://en.wikipedia.org/wiki/Chess_symbols_in_Unicode)
I'd also assume people would use https://en.wikipedia.org/wiki/Algebraic_notation_(chess) for the notation. No need to say "e2 e4" if "e4" is already non-ambiguous. Plus side for learning this notation is it can help read old games.