In 1971, after Wozniak began attending University of California, Berkeley, Jobs would visit him there a few times a week. This experience led him to study in nearby Stanford University's student union. Instead of joining the electronics club, Jobs put on light shows with a friend for Homestead's avant-garde jazz program. He was described by a Homestead classmate as "kind of brain and kind of hippie … but he never fit into either group. He was smart enough to be a nerd, but wasn't nerdy. And he was too intellectual for the hippies, who just wanted to get wasted all the time. He was kind of an outsider. In high school everything revolved around what group you were in, and if you weren't in a carefully defined group, you weren't anybody. He was an individual, in a world where individuality was suspect." By his senior year in late 1971, he was taking freshman English class at Stanford and working on a Homestead underground film project with Chrisann Brennan.
Around that time, Wozniak designed a low-cost digital "blue box" to generate the necessary tones to manipulate the telephone network, allowing free long-distance calls. He was inspired by an article titled "Secrets of the Little Blue Box" from the October 1971 issue of Esquire. Jobs decided then to sell them and split the profit with Wozniak. The clandestine sales of the illegal blue boxes went well and perhaps planted the seed in Jobs's mind that electronics could be both fun and profitable. In a 1994 interview, he recalled that it took six months for him and Wozniak to design the blue boxes. Jobs later reflected that had it not been for Wozniak's blue boxes, "there wouldn't have been an Apple". He states it showed them that they could take on large companies and beat them.