Imagine that an individual wanted by the justice system tries to apply for a passport under another name. To do so, the person presents forged documents containing the information of a citizen with no criminal record. During the service process, the issuing agency collects a facial photo and fingerprints. However, without a system capable of comparing this information against the entire government database, it can be difficult to identify that the person is already associated with another identity. As a result, the passport may be issued improperly, allowing the fraudster to cross borders, access restricted services, and hide their true identity.
This type of scam is not limited to passport issuance. It can also occur with other official documents, such as Brazil’s National ID Card, known as the Carteira de Identidade Nacional (CIN), and the National Driver’s License, known as the Carteira Nacional de Habilitação (CNH). When different databases do not communicate with one another, the same person may attempt to create duplicate identities and use third-party information to evade legal restrictions.
In this article, you will understand what ABIS is, how the technology works, and why it is important for public agencies responsible for issuing official documents.
Let’s get started!
What is ABIS
The Automated Biometric Identification System (ABIS) is a system designed to store, organize, and compare large volumes of biometric data, such as fingerprints and facial images. The goal of the technology is to verify whether a person already exists in a given database and whether there are possible duplicates or inconsistencies in the registration.
Unlike the standard biometric verification process, which performs a 1:1 comparison, ABIS is primarily designed to perform 1:N comparison, that is, one-to-many. This type of comparison enables large-scale biometric searches, since a new sample collected during citizen service is compared against thousands or even millions of existing records in the database.
How ABIS works in document issuance
In civil identification, ABIS begins when a citizen applies for an official document. During the service process, biographical and biometric information is collected, such as name, date of birth, facial photograph, and fingerprints.
After collection, the system extracts individual characteristics from the biometric information. For example, in the case of fingerprints, specific points called minutiae are analyzed. In facial recognition, facial patterns are evaluated to help differentiate one person from another.
Based on these characteristics, the system generates a digital model, also known as a biometric template. ABIS then compares this model against existing records in the government database.
The process helps the public agency clarify important points before issuing the document, such as:
- Existence of a prior registration in the database.
- Presence of another record with the same biometrics.
- Compatibility of the data presented with previous records.
- Possible signs of duplicate registration.
- Security required to authorize issuance.
With this information, the issuing agency reduces registration inconsistencies and prevents official documents from being issued with incorrect or duplicated data.
The importance of ABIS for official documents
In public administration, official documents are the gateway to various rights, services, and obligations. Passports, National ID Cards, driver’s licenses, immigration documents, and civil records must be linked to the correct person. In this context, ABIS provides greater quality, security, and reliability to government databases. With the system, public administration reduces inconsistencies across records, which increases the security of document issuance processes.
Using the CIN as an example, ABIS brings benefits such as:
- Fraud prevention: ABIS performs biometric deduplication, meaning it compares new data collected during service with records that already exist in the database. This helps prevent the same person from obtaining more than one document using different names, data, or identities.
- Secure person identification: The integration of different biometric characteristics, such as face and fingerprints, makes identity validation more accurate.
- National integration: The system contributes to the unification of data from different agencies and identification institutes, such as state-level structures, the Federal Police, and the Superior Electoral Court (TSE).
The adoption of ABIS is part of the modernization process for Brazil’s identification infrastructure, ensuring that documents comply with the civil identification standards established by law.
Examples of ABIS use in public administration
As mentioned, ABIS can be applied to different processes for issuing and validating official documents. See below:
National ID Card
The CIN aims to unify civil identification in Brazil. For this to happen securely, it is essential to prevent duplicate records and ensure that each citizen is associated with a single identity.
National Driver’s License
When issuing or renewing a CNH, ABIS helps confirm that the applicant matches the identity presented. This validation reduces inconsistencies between identification and traffic authority databases.
Passports
When issuing passports, the system verifies whether the biometrics collected during service are associated with another registration. The process prevents a person from attempting to obtain the document using third-party data or conflicting information.
Before issuance, the system compares the applicant’s facial photo and fingerprints against the existing database. If there is an inconsistency, the request can be reviewed more carefully by the responsible agency.
ABIS helps keep the national database more reliable, strengthening integration between states and public agencies and reducing registration discrepancies.
How to modernize identity management with an ABIS system
Implementing an ABIS from scratch is a complex project. The initiative requires robust infrastructure, high processing capacity, accurate biometric algorithms, as well as integration with existing systems and constant updates to maintain operational performance and security.
For public agencies, building this entire structure internally can be expensive and time-consuming. In addition, ongoing maintenance requires specialized teams and continuous investments in security, scalability, and performance.
A more agile alternative is integration via API. In this model, it is possible to incorporate the system without needing to develop the entire architecture internally. Biometric platforms, such as BioPass ID, offer scalability and compliance with Brazil’s General Data Protection Law (LGPD), enabling secure identification of individuals. The solution can be integrated with legacy systems or new applications, supporting the issuance, validation, and updating of official documents. As a result, the agency reduces implementation time, lowers technical risk, and advances the modernization of identity management with greater predictability.
Secure identity is the foundation of a reliable public service
Issuing official documents requires trust. When the government issues a passport, a National ID Card, a driver’s license, or an immigration document, the individual must be correctly linked to that document.
In this content, you learned what ABIS is and how it strengthens the document issuance process by automating large-scale biometric comparison. With the system, public agencies reduce duplicates, prevent registration inconsistencies, and improve database quality. Via BioPass ID, it is possible to incorporate this technology into public systems in a more agile, secure, and scalable way. The solution offers large-scale biometric identity management, enabling the agile and secure modernization of government processes.
Want to learn more about the topic? Read the article: Biometric Identification: Understanding the Multimodal Automated Identification System and the Role of the Automated Biometric Identification System.
