The court protected your body from being scanned, but not your identity from being recorded.
In Mexico, the boundary between privacy and accountability is being redrawn not through fingerprints, but through names and numbers. After the Supreme Court struck down biometric phone registration in 2022 as an unconstitutional overreach, a quieter successor has taken its place — one that demands identity without demanding the body. By June 30, 2026, every mobile line in the country must be linked to a real person, or fall silent. The court protected citizens from surrendering their biology; it said nothing about surrendering their anonymity.
- Millions of Mexican mobile users face a hard deadline: register your phone line with official ID by June 30, 2026, or lose all service except emergency calls.
- The 2022 Supreme Court victory against biometric surveillance now feels partial — the new system still ties every SIM card to a legal identity, just without fingerprints or iris scans.
- Telecom companies, not the government, hold the data, but the practical outcome is the same: anonymous phone use in Mexico is being systematically eliminated.
- A public lookup tool launched February 7, 2026, lets citizens check how many lines are registered under their CURP — exposing identity theft, but also exposing everyone.
- No grace period, no extensions — those who resist or simply miss the deadline will be cut off from calls, messages, banking verification codes, and mobile internet.
Mexico's Supreme Court made history in April 2022 when it struck down PANAUT, the National Registry of Mobile Phone Users, ruling that demanding fingerprints, iris scans, and facial recognition data as the price of a phone line violated constitutional privacy protections — and lacked any credible evidence it would reduce crime. It was a clear victory. But victories, it turns out, can have successors.
Beginning in January 2026, a new mandatory registration system began rolling out across the country. This one asks not for your body, but for your identity: full legal name, CURP national ID number, a valid government document, and a selfie to confirm you match the paperwork. The data stays with telecom companies rather than a centralized government database, and no biometrics are collected. The court's specific objection has been honored. The broader effect — the end of anonymous mobile use — has not.
Every SIM card must now be linked to a real person. Any line left unregistered after June 30, 2026, will be suspended. Users will lose calls, messages, and mobile internet; only 911 will remain reachable. The stated purpose is to combat extortion, fraud, and SIM card theft. The practical consequence is that a phone number is no longer a private thing.
A public verification platform launched February 7, 2026, allows any citizen to enter their CURP and see which lines are registered in their name — a tool designed to catch identity theft, but one that also makes the link between person and number visible and searchable. If an unrecognized number appears, it can be flagged and unlinked.
The Supreme Court ruled that the government cannot demand your biological signature for a phone line. It did not rule that you have a right to communicate anonymously. For most Mexicans, registration will be a quiet formality. For those who miss the deadline or resist on principle, the cost is concrete: disconnection from the digital infrastructure that modern life runs on. No extensions have been announced. The deadline holds.
Mexico's highest court has drawn a line, but not the one many hoped for. In April 2022, the Supreme Court of Justice struck down a sweeping biometric collection program called PANAUT—the National Registry of Mobile Phone Users—ruling that fingerprints, iris scans, and facial recognition data had no place in a phone registration system. The court found the program violated constitutional protections around privacy and personal data, and noted there was no credible evidence it would actually reduce crime. That victory, however, has given way to something more subtle and arguably more pervasive: a mandatory identification requirement that will affect every mobile phone user in Mexico by the end of June 2026.
The distinction matters, even if it feels like splitting hairs to the millions of Mexicans now facing a registration deadline. The old PANAUT system demanded biological data—your fingerprints, the geometry of your face, the pattern of your iris. The new scheme, which began rolling out in January 2026, asks for something different but no less identifying: your full legal name, your CURP (the national ID number), a valid government-issued document like an INE card or passport, and a photograph or selfie to confirm you match the document. No biometrics. No centralized government database holding your biological signature. Instead, the data stays with the telecom companies themselves, bound by data protection laws.
Yet the practical effect is nearly identical. Every SIM card must now be linked to a real person. The stated goal is to eliminate anonymous phone use and cut down on crimes like extortion, fraud, and SIM card theft. Starting July 1, 2026, any line that hasn't been registered will be suspended. Users won't be able to make calls, send text messages, or access mobile internet. The only function that will remain is the ability to dial 911. The window to register closes June 30—a deadline that has already prompted thousands of Mexicans to seek legal challenges and explore workarounds like foreign eSIM cards.
The registration process itself is straightforward enough. You can do it through a mobile app, an official website, or by visiting a telecom company's customer service center. You provide your name, CURP, ID, and a photo. The photo serves one purpose: to verify that you are who you claim to be. But the real innovation—or the real concern, depending on your view—is a public lookup tool that became available on February 7, 2026. Any citizen can enter their CURP and see how many phone lines are registered in their name. If you find a number you don't recognize, you can immediately request it be unlinked from your identity. The system is designed to catch cases of identity theft and unauthorized SIM card purchases, but it also means your phone number is no longer truly yours alone.
The Supreme Court's 2022 decision was rooted in a specific constitutional objection: that collecting biometric data from millions of people created an unacceptable security risk and violated privacy rights without proportional benefit. The court's reasoning was clear—a centralized database of fingerprints and facial scans could be breached, misused, or weaponized. But the court did not rule that phone users have a right to anonymity. It ruled only that the government cannot demand your body's unique markers as the price of a phone line. Identity itself, it turns out, is still fair game.
For most people, the new system will be invisible. They'll register, their line will stay active, and life continues. But for those who miss the deadline or resist the requirement, the consequences are real. A suspended line isn't just an inconvenience—it severs you from digital communication, from banking apps that send verification codes, from the infrastructure of modern life. The government and telecom companies have been explicit about this: complete your registration before the end of June, or lose service. No extensions have been announced. No grace period is planned. The clock is running, and for millions of Mexicans, the choice between privacy concerns and practical necessity is already being made.
Notable Quotes
The court found that collecting biometric data was disproportionate, lacked evidence of reducing crime, and posed unacceptable security and privacy risks.— Supreme Court of Justice reasoning in 2022 ruling
The Hearth Conversation Another angle on the story
So the Supreme Court won, in a way—they stopped the fingerprint collection. But people still have to register?
Right. The court said the government can't demand your biometrics. But it never said you get to use a phone anonymously. Those are two different things.
What's the actual difference between the old system and the new one, then?
The old one would have built a national database of your fingerprints and face scans. The new one just links your name and ID number to your SIM card. The data stays with the phone company, not the government.
That sounds safer, at least.
It is, in theory. But it also means every phone line is now traceable to a real person. There's no more anonymity. The court protected your body from being scanned, but not your identity from being recorded.
What happens if someone doesn't register by June 30?
Their line gets suspended. No calls, no texts, no mobile internet. Just 911. It's not a warning—it's a hard stop.
And the government can see all of this?
No, actually. The data is held by the telecom companies. But citizens can look up their own CURP and see how many lines are registered to them. It's meant to catch identity theft, but it also means you can't hide a phone number anymore.
So the court won a battle but lost the war?
Maybe. They stopped the government from collecting your fingerprints. But they didn't stop the government from requiring you to be identified. The form changed, but the outcome is the same.