There is no legal requirement for school uniforms in Brazil. On a state-by-state or city-by-city basis, governments may issue uniforms to public school pupils but may not require their use. Private schools are free to set their own uniform policy.
Schools in the northeastern city of Vitória da Conquista have taken their uniform policy a step further. Pupils in public schools are wearing chip-embedded T-shirts. These "intelligent uniforms" are embedded with locater chips that allow computers to automatically know whether pupils have arrived in school or not. If pupils do not turn up for school or classes, automated message is sent to inform the parents accordingly. The benefit of the automated system is to curb absenteeism and class skipping.