Is the biometric CURP mandatory?

Enrollment is voluntary for individuals with no fines, but government bodies and companies face sanctions if they refuse to accept it; the traditional CURP stays valid during the transition.

What does the biometric CURP contain?

Standard CURP data plus a photo, fingerprints from both hands, an electronic signature, and a QR code with cryptographic authentication.

🇲🇽 Mexico · National ID card

CURP

Clave Unica de Registro de Poblacion (CURP), including the biometric CURP

CURP is Mexico's universal 18-character population registry key assigned to every resident. A 2025 reform created the biometric CURP, adding a photo, fingerprints, an electronic signature, and a QR code, and establishing it as the official national identity document. Public enrollment opened in January 2026.

What it does

Identity verification / KYCBiometric authenticationOnline authentication

Country:🇲🇽 Mexico

Type:National ID card

Status:Live

Launched:1996

Issuer:Registro Nacional de Poblacion (RENAPO), under the Secretaria de Gobernacion

Who can get it:All Mexican citizens and legal residents

Format

18-character alphanumeric codeBiometric ID card with photoQR code

Identity attributes

Full nameSexDate of birthState of birthCURP keyDigital photographFingerprintsElectronic signature

Authentication methods

QR code verification with cryptographic authenticationBiometric verificationOnline CURP validation via gob.mx

Common use cases

Government services and benefits enrollmentCivil registry and identity recordsTax and social security linkageBanking and KYCSearch and identification of missing persons

Standards

Ley General de Poblacion (reform published July 2025)RENAPO / SEGOB technical standards

Coverage

Universal in design; biometric enrollment count not published

Interoperability

Domestic

Privacy and trust

The biometric CURP centralizes sensitive data such as fingerprints and facial images in a national registry, raising data-protection concerns from civil-society groups.

Identity verification providers

Independent identity verification vendors that support documents like this for KYC and onboarding. Exact document coverage varies by provider and region, so confirm support before relying on it.

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Official source

https://www.gob.mx/curp/

CURP: frequently asked questions

Is the biometric CURP mandatory?: Enrollment is voluntary for individuals with no fines, but government bodies and companies face sanctions if they refuse to accept it; the traditional CURP stays valid during the transition.
What does the biometric CURP contain?: Standard CURP data plus a photo, fingerprints from both hands, an electronic signature, and a QR code with cryptographic authentication.

Educational reference, not official guidance. Confirm current details with the issuing authority. See Mexico data protection law · all Mexico schemes · identity verification vendors