Exposing Surveillance at the U.S.-Mexico Border: 2024 Year in Review in Pictures

Some of the most picturesque landscapes in the United States can be found along the border with Mexico. Yet, from San Diego’s beaches to the Sonoran Desert, from Big Bend National Park to the Boca Chica wetlands, we see vistas marred by the sinister spread of surveillance technology, courtesy of the federal government.  

EFF refuses to let this blight grow without documenting it, exposing it, and finding ways to fight back alongside the communities that live in the shadow of this technological threat to human rights.  

Here’s a galley of images representing our work and the new developments we’ve discovered in border surveillance in 2024.  

1. Mapping Border Surveillance  

EFF published the first iteration of our map of surveillance towers at the U.S.-Mexico border in Spring 2023, having pinpointed the precise location of 290 towers, a fraction of what we knew might be out there. A year– –and– –a –half later, with the help of local residents, researchers, and search-and-rescue groups, our map now includes more than 500 towers.  

In many cases, the towers are brand new, with some going up as recently as this fall. We’ve also added the location of surveillance aerostats, checkpoint license plate readers, and face recognition at land ports of entry. 

In addition to our online map, we also created a 10’ x 7’ display that we debuted at “Regardless of Frontiers: The First Amendment and the Exchange of Ideas Across Borders,” a symposium held by the Knight First Amendment Institute at Columbia University in October. If your institution would be interested in hosting it, please email us at [email protected]. 

2. Infrastructures of Control

Two University of Arizona geographers—Colter Thomas and Dugan Meyer—used our map to explore the border, driving on dirt roads and hiking in the desert, to document the infrastructure that comprises the so-called “virtual wall.” The result: “Infrastructures of Control,” a photography exhibit in April at the University of Arizona that also included a near-actual size replica of an “autonomous surveillance tower.”   

You can read our interview with Thomas and Meyer here.

3. An Old Tower, a New Lease in Calexico 

Way back in 2000, the Immigration and Naturalization Service—which oversaw border security prior to the creation of Customs and Border Protection (CBP) within the Department of Homeland Security (DHS) — leased a small square of land in a public park in Calexico, Calif., where it then installed one of the earliest border surveillance towers. The lease lapsed in 2020 and with plans for a massive surveillance upgrade looming, CBP rushed to try to renew the lease this year. 

This was especially concerning because of CBP’s new strategy of combining artificial intelligence with border camera feeds.  So EFF teamed up with the Imperial Valley Equity and Justice Coalition, American Friends Service Committee, Calexico Needs Change, and Southern Border Communities Coalition to try to convince the Calexico City Council to either reject the lease or demand that CBP enact better privacy protections for residents in the neighboring community and children playing in Nosotros Park. Unfortunately, local politics were not in our favor. However, resisting border surveillance is a long game, and EFF considers it a victory that this tower even got a public debate at all. 

4. Aerostats Up in the Air 

CBP seems incapable of developing a coherent strategy when it comes to tactical aerostats—tethered blimps equipped with long-range, high-definition cameras. In 2021, the agency said it wanted to cancel the program, which involved four aerostats in the Rio Grande Valley, before reversing itself. Then in 2022, CBP launched new aerostats in Nogales, Ariz. and Columbus, N.M. and announced plans to launch 17 more within a year.  

But by 2023, CBP had left the program out of its proposed budget, saying the aerostats would be decommissioned. 

And yet, in fall 2024, CBP launched a new aerostat at the Santa Teresa Border Patrol Station in New Mexico. Our friends at Battalion Search & Rescue gathered photo evidence for us. Soon after, CBP issued a new solicitation for the aerostat program and a member of Congress told Border Report that the aerostats may be upgraded and as many as 12 new ones may be acquired by CBP via the Department of Defense.

Meanwhile, one of CBP’s larger Tethered Aerostats Radar Systems in Eagle Pass, Texas was down for most of the year after deflating in high winds. CBP has reportedly not been interested in paying hundreds of thousands of dollars to get it up again.   

5. New Surveillance in Southern Arizona

Buckeye Cameras are motion-triggered cameras that were originally designed for hunters and ranchers to spot wildlife, but border enforcement authorities—both federal and state/local—realized years ago that they could be used to photograph people crossing the border. These cameras are often camouflaged (e.g. hidden in trees, disguised as garbage, or coated in sand).  

Now, CBP is expanding their use of Buckeye Cameras. During a trip to Sasabe, Ariz., we discovered the CBP is now placing Buckeye Cameras in checkpoints, welding them to the border fence, and installing metal poles, wrapped in concertina wire, with Buckeye Cameras at the top.

On that same trip to Southern Arizona, EFF (along with the Infrastructures of Control geographers) passed through a checkpoint west of Tucson, where previously we had identified a relocatable surveillance tower. But this time it was gone. Why, we wondered? Our question was answered just a minute or two later, when we spotted a new surveillance tower on a nearby hill-top, a new model that we had not previously seen deployed in the wild.  

6. Artificial Intelligence  

CBP and other agencies regularly hold “Industry Days” to brief contractors on the new technology and capabilities the agency may want to buy in the near future. In January, EFF attended one such  “Industry Day” designed to bring tech vendors up-to-speed on the government’s horrific vision of a border secured by artificial intelligence (see the graphic above for an example of that vision). 

A graphic from a January 2024 “Industry Day” event. Source: Custom & Border Protection

At this event, CBP released the convoluted flow chart above as part of slide show. Since it’s so difficult to parse, here’s the best sense we can make out of it:. When someone crosses the border, it triggers an unattended ground sensor (UGS), and then a camera autonomously detects, identifies, classifies and tracks the person, handing them off camera to camera, and the AI system eventually alerts Border Patrol to dispatch someone to intercept them for detention. 

7. Congress in Virtual Reality

We search for surveillance on the ground. We search for it in public records. We search for it in satellite imagery. But we’ve also learned we can use virtual reality in combination with Google Streetview not only to investigate surveillance, but also to introduce policymakers to the realities of the policies they pass. This year, we gave Rep. Scott Peters (D-San Diego) and his team a tour of surveillance at the border in VR, highlighting the impact on communities.  

“[EFF] reminded me of the importance of considering cost-effectiveness and Americans’ privacy rights,” Peters wrote afterward in a social media. 

We also took members of Rep. Mark Amodei’s (R-Reno) district staff on a similar tour. Other Congressional staffers should contact us at [email protected] if you’d like to try it out.  

Learn more about how EFF uses VR to research the border in this interview and this lightning talk.  

8. Indexing Border Tech Companies 

In partnership with the Heinrich Böll Foundation, EFF and University of Nevada, Reno student journalist Andrew Zuker built a dataset of hundreds of vendors marketing technology to the U.S. Department of Homeland Security. As part of this research, Zuker journeyed to El Paso, Texas for the Border Security Expo, where he systematically gathered information from all the companies promoting their surveillance tools. You can read Zuker’s firsthand report here.

9. Plataforma Centinela Inches Skyward 

In fall 2023, EFF released its report on the Plataforma Centinela, a massive surveillance network being built by the Mexican state of Chihuahua in Ciudad Juarez that will include 10,000+ cameras, face recognition, artificial intelligence, and tablets that police can use to access all this data from the field. At its center is the Torre Centinela, a 20-story headquarters that was supposed to be completed in 2024.  

The site of the Torre Centinela in downtown Ciudad Juarez. Source: EFF

We visited Ciudad Juarez in May 2024 and saw that indeed, new cameras had been installed along roadways, and the government had begun using “Escorpión” mobile surveillance units, but the tower was far from being completed. A reporter who visited in November confirmed that not much more progress had been made, although officials claim that the system will be fully operational in 2025.

10. EFF’s Border Surveillance Zine 

Do you want to review even more photos of surveillance that can be found at the border, whether they’re planted in the ground, installed by the side of the road, or floating in the air? Download EFF’s new zine in English or Spanish—or if you live a work in the border region, email us as [email protected] and we’ll mail you hard copies.  

This article is part of our Year in Review series. Read other articles about the fight for digital rights in 2024.