The Government of Mexico has decided to update the identity document of its citizens. The Unique Population Registration Code (CURP) transitions from its classic 18-character format into a biometric document that incorporates fingerprints, facial photography, electronic signatures, and even iris scanning. This change is no small feat as it impacts the entire population, leading to certain doubts about its implementation.
What Exactly is Biometric CURP?
The CURP is the personal identifier assigned by the Mexican State to each citizen and resident. In its traditional version, it was merely an alphanumeric code printed on paper. The new biometric version retains this alphanumeric code but now includes a photograph of the holder, an electronic signature, a QR code with cryptographic authentication, and in most cases, iris registration. This management is carried out by the National Population Registry (RENAPO).
What Is It For and What Problems Does It Seek to Solve?
The Government led by Claudia Sheinbaum emphasizes the fight against disappearances as a primary argument for this new measure. By integrating biometric data into the ‘Single Identity Platform’, authorities can conduct on-site identity searches and validations, linking RENAPO with the National Forensic Data Bank and other institutions like the Attorney General’s Office (FGR) and state intelligence bodies.
Beyond this, the document aims to combat identity theft, reduce the proliferation of falsified documents, and simplify procedures such as opening bank accounts, gaining access to health services, applying for a passport, or enrolling in schools.
What Data Does It Collect?
Citizens must appear at the Civil Registry for the process, which usually takes between 20 and 30 minutes. During this time, ten fingerprints, a scan of the iris from both eyes, a photo, and the applicant’s digital signature are taken. The document is issued in both physical and digital formats, incorporating the usual personal data alongside the new biometric features, all accessible via a QR code. The government ensures this document is valid nationally and internationally.
Who Should Process It and When?
The decree mandates that the biometric CURP will be compulsory for all Mexican citizens and legal residents. However, its implementation is gradual. The measure took effect last October with a pilot phase involving Mexico City, the State of Mexico, and Veracruz, eventually expanding to regions including Jalisco, Nuevo León, Querétaro, and Tlalnepantla.
From October 2025, 145 modules will operate nationwide. Starting in February, this document will be required for certain government and private services, while the traditional CURP remains valid during this transitional period.
What Documents Are Required?
The process is in-person, free, and conducted only once. To attend the module, the following documents must be presented:
- Original birth certificate or certified copy
- Valid official identification with a photograph (INE, passport, or professional ID; for minors, a school ID)
- Validated traditional CURP
- Proof of address no older than three months
- Personal email
Minors must be accompanied by a parent or legal guardian.
Where Is It Processed?
Enabled modules include RENAPO offices, Civil Registry offices, CURP Mobile services, and itinerant modules in schools and community centers. It is advisable to schedule an appointment via the official RENAPO website.
Concerns and Issues
Despite the official argument for implementing this measure, it has faced criticism. Obligatory biometric data transfer—fingerprints, iris scans, and photographs—has generated discomfort among citizens, with fears of misuse or mass surveillance. The decree specifies that data will be stored under strict security protocols per the General Law on Protection of Personal Data, although skepticism about these guarantees remains.
What Happens If It Is Not Processed?
No economic sanctions exist for failing to request the biometric CURP. However, practical consequences could obstruct access to certain services. Individuals lacking the biometric CURP may face requests being denied in public and banking procedures, extended waits in administrative processes, or incompatibilities in digital identity records.
How to Check If You’ve Already Registered?
To verify if biometric registration has been processed, access the official CURP portal. If the receipt displays “CURP Biometric – Verified with RENAPO and Civil Registry,” the record is updated. Alternatively, you can confirm this in person at any Civil Registry or RENAPO module.

