Biometric CURP: what it is, whether it is mandatory, and what happens if you live in the United States
Few topics have generated as much noise recently as the biometric CURP. Messages circulate claiming there is a deadline, that scholarships will be lost without it, or that it replaces the INE voter card. Almost none of that is true, and the official clarifications have gone largely unnoticed next to the headlines.
This page sets out what is actually confirmed: exactly what it collects, what Mexico's Ministry of the Interior has said about it being voluntary, and — the part almost nobody explains — what someone living in the United States can do. If what you need is your everyday key, that is in our CURP guide.
Contents
What the biometric CURP is
In July 2025 Mexico's Official Gazette published a reform to the General Population Act that creates an expanded version of the CURP. The 18-character key itself does not change: what is added is a record of biometric data tied to that key, intended to strengthen the right to identity and make impersonation harder.
In other words, it is not a new CURP that cancels the old one. It is the same key with a biometric file behind it.
Is it mandatory? What the Ministry of the Interior clarified
This is where the misinformation concentrates, so let us stick to what is confirmed. Under RENAPO's federal guidelines, registering for the biometric CURP is voluntary, free and gradual.
The Ministry of the Interior has clarified expressly that it has issued no statement to Mexico's states making it mandatory or tying it to obtaining any other procedure or service. It has also made three further points:
- There is no deadline by which citizens must have it. The rollout is gradual.
- It does not replace the INE voter card, which remains the official identification document.
- It does not condition access to social programmes, pensions or scholarships.
If you receive a message saying you will lose your pension or scholarship after a certain date unless you get the biometric CURP, it is not true. And if it also asks for a payment or your bank details up front, it is straightforwardly an attempted scam: the procedure is free.
What data it collects
During the appointment, authorised staff capture:
- All ten fingerprints.
- A facial photograph.
- An iris scan.
- The holder's digital signature.
Worth bearing in mind when deciding: these are biometric details that cannot be changed if there is ever a breach, unlike a password. It is a personal decision, and that is precisely why registration has been set up as voluntary.
Requirements and where to apply
The procedure is done in person, at Civil Registry offices and RENAPO modules across Mexico. There is also an official appointment portal at citas.renapo.gob.mx.
The documents usually requested:
- Your traditional CURP, validated with RENAPO. Download it first following our CURP guide.
- Valid photo identification (INE card, passport or immigration document).
- A certified birth certificate.
- A recent proof of address and an active email address.
* Specific requirements can vary between modules and states. Always confirm with the module that covers you before travelling.
If you live in the United States
This is the part no other site is telling you clearly, and the one that generates the most questions.
Biometric enrolment is done in person and is not currently available outside Mexico. You cannot apply for the biometric CURP at a Mexican consulate in the United States, nor online, nor by mail. If someone offers to arrange it for you from the US in exchange for money, they are deceiving you.
What does that mean for you in practice?
- Your existing CURP remains fully valid. You can download and print it free whenever you need it.
- No consular procedure will be refused because you lack it. At the consulate they will ask for the regular CURP, exactly as before.
- If you travel to Mexico and are interested, you can visit a module during your stay. It is voluntary, so there is no rush.
- If you were born outside Mexico, your situation has its own particulars: see our guide to the CURP for people born abroad.
Mexican consulates do not issue the CURP in any of its versions. What they can do is advise you on your paperwork; find yours in the consulate directory.
Frequently asked questions about the biometric CURP
Is the biometric CURP mandatory?
No. The Ministry of the Interior has clarified that registration is voluntary, free and gradual, and that it has issued no statement making it mandatory or tying it to other procedures or services.
Can I apply from the United States?
No. Enrolment is in person and is not currently available outside Mexico. Consulates do not carry it out either.
How much does it cost?
Nothing: the procedure is free. Any charge to "arrange" it is improper.
Does it replace the INE card?
No. The Ministry has stated expressly that it does not replace the voter ID card and does not condition access to social programmes, pensions or scholarships.
Does my existing CURP stop working?
No. Your traditional CURP remains fully valid and you can download it free whenever you need it. We explain how in our CURP guide.
Exactly what biometric data does it collect?
All ten fingerprints, a facial photograph, an iris scan and a digital signature.