Modi, who lives in New York City and is in sixth grade, uses a method dubbed Diceware to come up with passwords for her clients. The method works like this: “You roll a die 5 times and write down each number,” according to her website, www.dicewarepasswords.com. “Then you look up the resulting five-digit number in the Diceware dictionary, which contains a numbered list of short words.”

She started the business because her mother, tech journalist Julia Angwin, was simply too “lazy to roll dice,” she explained on the site. “So she paid me to make [sic] roll dice and make passwords for her. Then I realized that other people wanted them, too.”

“This is my first business (other than occasional lemonade stands!),” Modi added. “But I’m very excited about it and will be very responsible.”

Ars Technica reported that she’s sold 30 passwords in her first month of business.

“This whole concept of making your own passwords and being super secure and stuff, I don’t think my friends understand that,” Modi said to Ars Technica in an interview, “but I think it’s cool.”