Two ways in which the script of the Indus Valley Civilization provides us with valuable historical information are:
- The Indus script indicates that the script was pictographic as it uses signs of birds, fishes and humans.
- Although not yet deciphered, the script is found inscribed on a number of seals, copper tools, rims of jar, copper and terracotta tablets, jewellery and on an ancient signboard. This indicates that the Harappan civilisation was an advanced urban civilisation.