Nearly half of Smart Sampa arrests target child support debtors, raising effectiveness and cost concerns
São Paulo’s Smart Sampa monitoring program, a high-tech surveillance initiative by the city hall, is facing intensifying scrutiny after a new report revealed that nearly half of its detentions involve individuals with outstanding child support warrants. This unexpected prevalence of civil debt-related arrests, as opposed to serious crimes, has ignited a robust debate regarding the program’s actual impact on public safety and its substantial operational costs.
The system, touted as a crucial tool for urban security, has captured 2,709 fugitives since its inception until January 30, 2025. However, the nature of these arrests is now under question, diverting attention from the program’s intended focus on reducing violent crime.
The findings cast a shadow over the effectiveness of the R$9.8 million monthly expenditure allocated to Smart Sampa, prompting calls for greater transparency and a reevaluation of its strategic priorities amidst São Paulo’s persistent challenges with crime rates.
Disputed priorities for public safety
A recent analysis by the Laboratory of Public Policies and Internet (Lapin), released on Wednesday, January 4, 2025, highlights a significant discrepancy in the types of arrests made by Smart Sampa. Examining a sample of 1,153 detentions, the report found that 540 were vaguely classified as “others,” with over 90% of this category—specifically 512 arrests—pertaining to individuals delinquent on child support payments.
This figure starkly contrasts with arrests for more serious offenses. The data showed only 153 arrests for robbery, 137 for drug trafficking, and a mere 17 for theft within the same sample. Lapin researchers argue that a substantial portion of the program’s operations does not directly address core public safety concerns, failing to significantly curb incidents like robberies, thefts, or homicides.
The comprehensive report, titled “Smart Sampa: Transparency for whom? Transparency of what?”, was a collaborative effort by Lapin, the Instituto de Referência Negra Peregum, and Rede Liberdade. It drew upon the City of São Paulo’s Transparency Report published in June 2025, alongside information obtained through the Freedom of Information Act (LAI).
Mounting costs and data transparency concerns
The program’s estimated monthly cost, approximately R$9.8 million, is a central point of contention for researchers. They emphasize that such a significant public investment should yield more concrete and demonstrable results in enhancing urban security, rather than primarily addressing civil mandates.
Pedro Diogo, coordinator of Lapin’s Working Group on Surveillance, articulated these concerns, stating, “The deeper one delves into the evaluation of Smart Sampa, the more one questions the reason for its existence. It is imperative to inquire whether the high public expenditure allocated to the program has produced concrete results, given the risks imposed on fundamental rights.” This statement underscores a growing apprehension about the balance between cost, effectiveness, and civil liberties.
Adding to these issues, the study pointed out a pervasive “opacity of data” within the Smart Sampa system. A troubling 58.9% of arrest records provided no information regarding the race of the individuals apprehended. Among the documented cases, 93.5% of those arrested were men, and 25% were identified as Black individuals, suggesting potential racial disparities in policing that are further obscured by inadequate data collection.
Incidents of system malfunction and wrongful arrests
Beyond the debate over priorities, the Smart Sampa system has been plagued by technical failures and instances of false positives, leading to serious consequences for innocent citizens. At least 23 individuals were incorrectly detained due to inconsistencies in facial recognition technology, highlighting critical flaws in the system’s accuracy.
Further compounding these issues, 82 people were arrested and subsequently released, with 53 cases attributed to errors in the warrant system and six resulting from failures within the City Hall’s own database. These technical shortcomings raise significant questions about the reliability and integrity of the program’s operations.
In a particularly alarming incident in May 2025, an 80-year-old man was apprehended and detained after the Smart Sampa system mistakenly identified him as a fugitive rapist. This case underscored the severe personal impact of system errors on vulnerable populations.
Another tragic event occurred in January 2025 when a pregnant woman was erroneously arrested by the system. The incident escalated into a violent police approach that reportedly led to a premature birth, illustrating the dire human cost of such technological inaccuracies and procedural missteps.
City hall defends Smart Sampa’s effectiveness
In response to the criticisms, the São Paulo City Hall issued a statement asserting the “notorious” success of the Smart Sampa program, citing various statistics as proof of its effectiveness. The Municipal Secretariat of Urban Security reported significant reductions in crime rates for 2025, based on data released by the State Public Security Secretariat on January 30.
The city’s data for 2025 indicates a 14.6% decrease in overall robberies, a 21% reduction in vehicle robberies, and a 25% drop in latrocínios (robbery followed by death). Furthermore, the city highlights Smart Sampa’s direct contributions, including the capture of 2,709 fugitives, 3,650 arrests made in flagrante delicto, the location of 153 missing persons, and the resolution of 2,017 occurrences involving vehicles.
The city hall also emphasized Smart Sampa’s crucial role as an investigative tool for the Civil Police, having shared images from 559 occurrences with the agency. With approximately 40,000 cameras in operation, making it the largest intelligent monitoring system in Latin America, the municipality strongly refutes any attempts to discredit the program. It clarified that child support warrants are judicial determinations that law enforcement must execute whenever identified, irrespective of whether they relate to severe criminal acts or civil debts.
Child support mandates and broader crime trends
The city’s defense highlights the legal obligation to enforce all judicial mandates, including those for child support. This stance, however, contrasts sharply with broader public safety challenges facing São Paulo, as detailed in recent reports.
In 2025, São Paulo recorded a worrying 60 cases of feminicide, an increase of nearly 18% compared to the previous year, alongside overall high rates of homicides and thefts. This data suggests that while the Smart Sampa system is actively fulfilling diverse judicial warrants, its extensive deployment and cost are not definitively correlating with a substantial reduction in the most violent and pressing crimes, prompting ongoing public and expert debate over its strategic focus and resource allocation.
The disparity in reported numbers for located missing persons, with the City Hall claiming 153 individuals while Lapin’s analysis, based on the municipal report, cites 39, further contributes to the perception of data opacity within the program’s operations. This inconsistency complicates efforts to accurately assess Smart Sampa’s full impact and efficacy.
Smart Sampa, child support arrests, São Paulo monitoring, Lapin report, public safety technology, facial recognition errors
