Modi script is a way of writing that was used in India a long time ago. It is a type of writing called Brahmic script that was used in the 14th to 19th centuries. People who used Modi script wrote in a language called Gujarati.
Modi script is made up of lots of little marks and lines that represent different sounds and words. It looks a bit like a secret code because the letters are all squished together and have different shapes than the letters we use today.
To use Modi script, you would need a special tool called a stylus which is a small stick you use to write on paper or other surfaces. The stylus would scratch the marks onto the paper and then the writing could be read by someone who knew how to read Modi script.
Nowadays, Modi script is not used as much as it used to be because people use other scripts like Devanagari or Roman script. However, some people still like to use it to write things like poetry or to make traditional art. It is a special way of writing that reminds people of the past and connects them to their culture and heritage.