Last updated on November 3, 2025
No. Deploying facial-recognition attendance systems in Brazilian state public schools is not permitted without strict compliance with the General Data Protection Law (LGPD) and oversight from the National Data Protection Authority (ANPD). Current cases show that such implementations have faced legal challenges for violating privacy and data protection principles.
Why the Answer is No
Brazil’s education system is no stranger to technological innovation, but when it comes to facial recognition, the country draws a hard line. While some states have experimented with biometric attendance systems, these initiatives have sparked lawsuits and public debate. The reason? Facial recognition involves processing sensitive personal data—students’ biometric information—which is heavily regulated under the LGPD.
The Legal Landscape
Brazil’s General Data Protection Law (Lei Geral de Proteção de Dados – LGPD) classifies biometric data as “sensitive,” requiring a clear legal basis, transparency, and strict safeguards for its collection and use. Schools, as public entities, must demonstrate necessity, proportionality, and obtain valid consent from parents or guardians before deploying such systems. Failure to do so can lead to severe penalties, including fines and suspension of data processing activities.
The National Data Protection Authority (ANPD) has reinforced these principles in its reports and consultations, emphasizing that facial recognition in educational settings poses high risks to privacy and equality. Sensitive data misuse can result in discrimination, wrongful identification, and long-term harm, especially for minors.
Recent Legal Challenges
In 2025, prosecutors in Paraná filed a civil lawsuit against the state government for implementing facial-recognition attendance systems without proper consent or transparency. The case highlighted violations of LGPD principles such as purpose limitation and necessity. Authorities argued that scanning students’ faces to log attendance unlawfully handled biometric data of nearly one million minors. The lawsuit seeks R$15 million in damages and a permanent ban on the practice.
These legal actions underscore a critical point: Brazil lacks specific legislation authorizing facial recognition in schools. While bills addressing artificial intelligence and biometric technologies are under discussion, the current framework relies on LGPD and constitutional guarantees of privacy and informational self-determination.
Cultural and Practical Context
Brazilian society values education as a public good, and protecting children’s rights is a constitutional mandate. Introducing facial recognition in classrooms without robust safeguards clashes with these principles. Critics argue that such systems normalize surveillance and erode trust in public institutions. Supporters claim they improve efficiency and security, but without clear rules, these benefits cannot outweigh the risks.
What Compliance Would Require
For facial-recognition attendance systems to operate legally in schools, authorities would need:
- A specific legal framework regulating biometric technologies in education.
- Data Protection Impact Assessments approved by ANPD.
- Explicit, informed consent from parents or guardians.
- Strong security measures to prevent data leaks and misuse.
Until these conditions are met, deploying such systems remains legally precarious.
Practical Advice for Education Authorities
Before considering facial recognition, schools should explore less intrusive alternatives for attendance tracking, such as smart cards or digital check-ins. These methods respect privacy while achieving operational goals. If biometric solutions are deemed necessary, they must align with LGPD requirements and ANPD guidelines to avoid costly litigation and reputational harm.
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Sources
Issue of Public Consultation on Biometric Data – ANPD
https://www.mattosfilho.com.br/en/unico/protection-biometric-data/
June 4, 2025
Surveillance Technologies and Education – InternetLab
https://internetlab.org.br/en/biblioteca/surveillance-technologies-and-education-mapping-facial-recognition-policies-in-brazilian-public-schools/
2023