The Harappans were literate people.
Recent studies suggest that the Harappan script consists of about 400 signs and that it was written from right to left.
However, the script has not been deciphered as yet.
It is believed that they used ideograms i.e., a graphic symbol or character to convey the idea directly.
We do not know the language they spoke, though scholars believe that they spoke “Brahui”, a dialect used by Baluchi people in Pakistan today.