What’s billed as the world’s largest technology fair is kicking off in Sao Paulo this week. Brazil’s Campus Party attracts thousands of young, computer-savvy campers, keen to learn from the experts and check out the latest high-tech creations. At this festival, the stars aren’t rock bands, but startup heads. The 11th edition of Brazil’s Campus Party is kicking off in Sao Paulo. The sprawling event claims to be the world’s largest technology festival of innovation, creativity, science, entrepreneurship and digital universe. The Campus Party Tech fair attracts people from all over Brazil, most of them young students, entrepreneurs, developers, hackers and people looking for opportunities to present their own business.