World
Sensors can read your sweat and predict overheating. Here's why privacy advocates care
On a hot summer day in Oak Ridge, Tennessee, dozens of men removed pipes, asbestos and hazardous waste while working to decontaminate a nuclear facility and prepare it for demolition.
Dressed in head-to-toe coveralls and fitted with respirators, the crew members toiling in a building without power had no obvious respite from the heat. Instead, they wore armbands that recorded their heart rates, movements and exertion levels for signs of heat stress.
Stephanie Miller, a safety and health manager for a U.S. government contractor doing cleanup work at the Oak Ridge National Laboratory, watched a computer screen nearby. A color-coding system with little bubbles showing each worker’s physiological data alerted her if anyone was in danger of overheating.
“Heat is one of the greatest risks that we have in this work, even though we deal with high radiation, hazardous chemicals and heavy metals,” Miller said.
As the world experiences more record high temperatures, employers are exploring wearable technologies to keep workers safe. New devices collect biometric data to estimate core body temperature – an elevated one is a symptom of heat exhaustion – and prompt workers to take cool-down breaks.
The devices, which were originally developed for athletes, firefighters and military personnel, are getting adopted at a time when the Atlantic Council estimates heat-induced losses in labor productivity could cost the U.S. approximately $100 billion annually.
This article is part of AP’s Be Well coverage, focusing on wellness, fitness, diet and mental health. Read more Be Well.
But there are concerns about how the medical information collected on employees will be safeguarded. Some labor groups worry managers could use it to penalize people for taking needed breaks.
“Any time you put any device on a worker, they’re very concerned about tracking, privacy, and how are you going to use this against me,” said Travis Parsons, director of occupational safety and health at the Laborers’ Health and Safety Fund of North America. “There’s a lot of exciting stuff out there, but there’s no guardrails around it.”
VULNERABLE TO HEAT
At the Tennessee cleanup site, the workers wearing heat stress monitors made by Atlanta company SlateSafety are employed by United Cleanup Oak Ridge. The company is a contractor of the U.S. Department of Energy, which has rules to prevent on-the-job overheating.
But most U.S. workers lack protections from extreme heat because there are no federal regulations requiring them, and many vulnerable workers don’t speak up or seek medical attention. In July, the Biden administration proposed a rule to protect 36 million workers from heat-related illnesses.
From 1992 to 2022, 986 workers died from heat exposure in the U.S., according to the Environmental Protection Agency. Experts suspect the number is higher because a coroner might not list heat as the cause of death if a sweltering roofer takes a fatal fall.
Setting occupational safety standards can be tricky because individuals respond differently to heat. That’s where the makers of wearable devices hope to come in.
HOW WEARABLE HEAT TECH WORKS
Employers have observed workers for heat-related distress by checking their temperatures with thermometers, sometimes rectally. More recently, firefighters and military personnel swallowed thermometer capsules.
“That just was not going to work in our work environment,” Rob Somers, global environment, health and safety director at consumer product company Perrigo, said.
Instead, more than 100 employees at the company’s infant formula plants were outfitted with SlateSafety armbands. The devices estimate a wearer’s core body temperature, and a reading of 101.3 degrees triggers an alert.
Another SlateSafety customer is a Cardinal Glass factory in Wisconsin, where four masons maintain a furnace that reaches 3000 degrees Fahrenheit.
“They’re right up against the face of the wall. So it’s them and fire,” Jeff Bechel, the company’s safety manager, said.
Cardinal Glass paid $5,000 for five armbands, software and air-monitoring hardware. Bechel thinks the investment will pay off; an employee’s two heat-related emergency room visits cost the company $15,000.
Another wearable, made by Massachusetts company Epicore Biosystems, analyzes sweat to determine when workers are at risk of dehydration and overheating.
“Until a few years ago, you just sort of wiped (sweat) off with a towel,” CEO Rooz Ghaffari said. “Turns out there’s all this information packed away that we’ve been missing.”
Research has shown some devices successfully predict core body temperature in controlled environments, but their accuracy remains unproven in dynamic workplaces, according to experts. A 2022 research review said factors such as age, gender and ambient humidity make it challenging to reliably gauge body temperature with the technology.
The United Cleanup Oak Ridge workers swathed in protective gear can get sweaty even before they begin demolition. Managers see dozens of sensor alerts daily.
Laborer Xavier Allison, 33, was removing heavy pieces of ductwork during a recent heat wave when his device vibrated. Since he was working with radioactive materials and asbestos, he couldn’t walk outside to rest without going through a decontamination process, so he spent about 15 minutes in a nearby room which was just as hot.
“You just sit by yourself and do your best to cool off,” Allison said.
The armband notifies workers when they’ve cooled down enough to resume work.
“Ever since we implemented it, we have seen a significant decrease in the number of people who need to get medical attention,” Miller said.
COLLECTING PERSONAL DATA
United Cleanup Oak Ridge uses the sensor data and an annual medical exam to determine work assignments, Miller said. After noticing patterns, the company sent a few employees to see their personal physicians, who found heart issues the employees hadn’t known about, she said.
At Perrigo, managers analyze the data to find people with multiple alerts and speak to them to see if there’s “a reason why they’re not able to work in the environment,” Somers said. The information is organized by identification numbers, not names, when it goes into the company’s software system, he said.
Companies keeping years of medical data raises concerns about privacy and whether bosses may use the information to kick an employee off a health plan or fire them, said Adam Schwartz, privacy litigation director at the Electronic Frontier Foundation.
“The device could hurt, frankly, because you could raise your hand and say ‘I need a break,’ and the boss could say, ‘No, your heart rate is not elevated, go back to work,’” Schwartz said.
To minimize such risks, employers should allow workers to opt in or out of wearing monitoring devices, only process strictly necessary data and delete the information within 24 hours, he said.
Wearing such devices also may expose workers to unwanted marketing, Ikusei Misaka, a professor at Tokyo’s Musashino University, said.
A PARTIAL SOLUTION
The National Institute for Occupational Safety and Health advises employers to institute a plan to help workers adjust to hot conditions and to train them to recognize signs of heat-related illness and to administer first aid. Wearable devices can be part of efforts to reduce heat stress, but more work needs to be done to determine their accuracy, said Doug Trout, the agency’s medical officer.
The technology also needs to be paired with access to breaks, shade and cool water, since many workers, especially in agriculture, fear retaliation for pausing to cool off or hydrate.
“If they don’t have water to drink, and the time to do it, it doesn’t mean much,” Juanita Constible, senior advocate at the National Resources Defense Council, said. “It’s just something extra they have to carry when they’re in the hot fields.”
___
Yuri Kageyama in Tokyo contributed to this report.
NEWYou can now listen to Fox News articles!
Secretary of State Marco Rubio arrived in France on Friday to attend the G7 foreign ministers meeting where he will deliver a clear message on U.S. priorities for the ongoing war with Iran.
In the days leading up to the meeting, other members have taken markedly different approaches to the war. Nearly all of Washington’s partners — Britain, Canada, France, Germany, Italy and Japan — have reacted cautiously to the U.S.-Israeli military campaign and declined to participate in offensive operations, even as they condemn Iranian actions.
Before departing on Thursday, Rubio signaled a defiant approach to the talks: “I don’t work for France or Germany or Japan… the people I’m interested in making happy are the people of the United States. I work for them,” he said in a video posted on X.
The divergence has drawn frustration from President Donald Trump, who has pressed allies to contribute more, particularly in securing key maritime routes such as the Strait of Hormuz. While some countries have signaled a willingness to support defensive or maritime security efforts, they have stopped short of joining direct military strikes.
TRUMP PRESSES NATO PARTNERS ON SUPPORT AS HEGSETH BLASTS HESITATION
“The U.S. is constantly asked to help in wars and we have. But when we had a need, it didn’t get positive responses from NATO. A couple leaders said that Iran was not Europe’s war. Well, Ukraine isn’t our war, yet we’ve contributed more to that fight than anyone,” Rubio added.
“The Strait of Hormuz could be open tomorrow if Iran stops threatening global shipping, which is an outrage and a violation of international law. For all these countries that care about international law, they should be doing something about it,” he said before boarding his plane to France.
The remarks set the tone for a summit already marked by growing friction between Washington and some of its closest allies over how to handle the Iran conflict. Rubio has framed the stakes in stark terms. “Iran has been at war with the United States for 47 years… Iran has been killing Americans and attacking Americans across this planet,” he said during a White House cabinet meeting, adding that allowing Tehran to obtain nuclear weapons would be “an unacceptable risk for the world.”
But even before Rubio arrived at the meeting, European officials were signaling a markedly different approach.
“We need to exit from the war, not escalate this further, because the consequences for everybody around the world are quite severe,” Vice President of the European Commission Kaja Kallas said during a briefing on the sidelines of the G7 on Thursday.
JACK KEANE CALLS OUT NATO’S WEAKNESS AS SHIPPING CRISIS GRIPS STRAIT OF HORMUZ
(L/R, clockwise) French President Emmanuel Macron, European Commission President Ursula Von der Leyen, NATO Secretary General Mark Rutte, Japanese Prime Minister Shigeru Ishiba, German Chancellor Friedrich Merz, US Secretary of Treasury Scott Bessent, Canadian Prime Minister Mark Carney, Ukrainian President Volodymyr Zelenskyy, British Prime Minister Keir Starmer, and Italian Prime Minister Giorgia Meloni meet during the Group of Seven (G7) Summit at the Pomeroy Kananaskis Mountain Lodge in Kananaskis, Alberta, Canada on June 17, 2025 (LUDOVIC MARIN/AFP via Getty Images)
“It can only be a diplomatic solution… sit down and negotiate to have a way out,” she added.
The contrast between Rubio’s framing and Kallas’s message captures the core tension shaping the meeting.
U.S. officials say Rubio is heading into the talks with a broader agenda that goes beyond Iran.
According to a State Department spokesperson, who spoke to Fox News Digital on background, Rubio will use the meeting to “advance key U.S. interests” and push discussions on the wars in Ukraine and the Middle East, as well as “international burden sharing” and the overall effectiveness of the G7.
The U.S. is also expected to emphasize maritime security, including freedom of navigation in the Strait of Hormuz and the Red Sea, while urging allies to take on a greater share of responsibilities in conflict zones and international organizations, the spokesperson said.
RUBIO, RATCLIFFE TO DELIVER CLASSIFIED IRAN BRIEFING TO ‘GANG OF EIGHT’ AHEAD OF TRUMP’S STATE OF THE UNION
U.S. Secretary of State Marco Rubio speaks to reporters before boarding a plane as he is headed to France where he will take part in the G7 foreign ministers’ meeting, at Joint Base Andrews in Maryland, U.S., March 26, 2026. (Brendan Smialowski/Pool via Reuters)
European officials have instead emphasized the broader risks of the conflict.
France’s foreign minister, Jean-Noël Barrot, said discussions at the G7 would build on a recent joint statement condemning Iran’s actions while also addressing maritime security concerns.
He said the “discussions will provide an opportunity to revisit positions already agreed at the G7 level… including the unjustifiable attacks carried out by Iran against Gulf countries… which we condemned in the strongest possible terms.”
Barrot added that ministers would also focus on securing global shipping routes.
A satellite image shows the Strait of Hormuz, a key maritime passage connecting the Persian Gulf to the Gulf of Oman, vital for global energy supply. (Amanda Macias/Fox News Digital)
“We will also have the opportunity to address maritime security and freedom of navigation… including an international mission… to ensure the smooth flow of maritime traffic in a strictly defensive posture, thereby helping to ease pressure on energy prices,” he said.
Kallas echoed that global framing. “All the countries in the world are one way or another affected by this war… it is in the interest of everybody that this war stops,” she said.
IRAN SIGNALS NUCLEAR PROGRESS IN GENEVA AS TRUMP CALLS FOR FULL DISMANTLEMENT
Kaja Kallas, High Representative of the European Union (EU) for Foreign Affairs and Security Policy speaks to the press during EU Summit in Brussels, Belgium on Dec. 19, 2024. (Photo by Nicolas Landemard/Anadolu via Getty Images)
Her remarks also pointed to the interconnected nature of the crisis. “Russia is helping Iran with intelligence… and also supporting Iran now with drones,” she said, linking the Iran conflict to the war in Ukraine.
That uncertainty is already affecting the structure of the summit, with officials dropping plans for a unified final communiqué to avoid exposing divisions, Reuters reported.
Analysts say those differences reflect deeper structural tensions in the alliance. “Europe has criticized Donald Trump’s ‘maximum pressure’ strategy towards Iran while pursuing a failed diplomatic approach that has enabled the regime to expand its terrorist networks and edge closer to nuclear threshold status,” Barak Seener, senior research fellow at the Henry Jackson Society, told Fox News Digital.
“This reflects a lack of European capability to project power in the region, particularly in safeguarding the Strait of Hormuz.”
FILE PHOTO: Cargo ships in the Gulf, near the Strait of Hormuz, as seen from northern Ras al-Khaimah, near the border with Oman’s Musandam governance, amid the U.S.-Israeli conflict with Iran, in United Arab Emirates, March 11, 2026. (REUTERS/Stringer/File Photo/File Photo)
Seener added that years of reliance on Washington have left Europe increasingly exposed as the U.S. shifts its strategic priorities. “Years of underinvestment in defense and reliance on the United States have created a dependency that Washington increasingly views as a betrayal of the peace it has guaranteed Europe since the Second World War,” he said.
“With the U.S. placing greater value on its relationship with Israel than NATO, the result may be further erosion of the alliance, reduced support for Ukraine and rising economic pressure on Europe.”
He warned that the immediate test will come at the G7 itself. “Divisions over how to respond to Iran and to any U.S. request for support are likely to expose a deeper transatlantic split,” Seener said.
“Operation Epic Fury has showcased President Trump’s ability to assemble a coalition of allies to eliminate a common threat — in this case the Iranian regime — and stabilize international trade,” Jacob Olidort, chief research officer and director of American security at the America First Policy Institute, told Fox News Digital.
CLICK HERE TO DOWNLOAD THE FOX NEWS APP
A satellite view shows the Strait of Hormuz, a key global energy chokepoint connecting the Persian Gulf to the Gulf of Oman, on Oct. 2, 2024. (Gallo Images/Orbital Horizon/Copernicus Sentinel Data via Getty Images)
“The failure of Western Europe to participate in securing the Strait of Hormuz is particularly egregious because those countries depend on it more than we do,” he added.
“At the same time, the historic successes of Operation Epic Fury have awakened a new confidence in our Middle East partners to eradicate the threats from the Iranian regime and to work together to shape a more peaceful and prosperous region.”
Published on
On today’s show:
ADVERTISEMENT
ADVERTISEMENT
Top story: G7 Summit debrief with Méabh Mc Mahon and Maia de la Baume.
Explainer by Jakub Janas: What’s the point of the G7 meeting?
Iran war update with Méabh Mc Mahon and Babak Kamiar.
Interview with Ghassan Salamé, Lebanese Culture Minister.
Interview with Valérie Hayer, Member of the European Parliament (Renew Europe, France).
When and where to watch Europe Today?
You can join Euronews’ chief anchor Méabh Mc Mahon and our EU editor Maria Tadeo live on TV and Euronews’ website and digital platforms every weekday.
Our new format brings you the day’s key events plus crucial analysis of all the stories shaping the EU and beyond. It’s also available as a newsletter and podcast.
The official additionally stated that Iran has reviewed a US 15-point proposal for ending the ongoing war in the Middle East and deemed it “one-sided and unfair,” serving only US and Israeli interests, and lacking “the minimum requirements for success.”
“In brief, the proposal suggests that Iran would relinquish its ability to defend itself in exchange for a vague plan to lift sanctions,” he told Reuters.
No arrangement for negotiations has been established yet, the official continued, adding that Turkey and Pakistan are attempting to “establish common ground between Iran and the United States and reduce differences.”
The proposal, which was conveyed to Iran through Pakistan, “was reviewed in detail on Wednesday night by senior Iranian officials and the representative of Iran’s Supreme Leader,” the official said.
On Wednesday, Iranian regime-tied Press TV cited an Iranian official as stating that Tehran considered the conditions of the proposal excessive and would only agree to end the war at a time of its choosing if its conditions are met.
According to an N12 News report on Tuesday, citing three sources familiar with the details of the potential plan, the US was considering declaring a month-long ceasefire during which negotiations on the agreement would take place.
The 15-point plan reportedly contained terms including the dismantling of all existing Iranian nuclear capabilities, a commitment that Iran will discontinue efforts to obtain nuclear weapons, and a requirement that any already enriched uranium be moved out of Iran.
Rubio meets G7 ministers in France as US leads on Iran — allies under fire for tepid response
DHS shutdown breakthrough comes at cost for Republicans as funding fights nears end
Dementia risk signals could lie in simple blood pressure readings, researchers say
Indiana coach Cignetti sends message to star transfer with pre-practice dress code lesson
Drone food delivery launches in New Jersey
Florida High School Football Rankings: Top 25 teams – Oct. 21
How old is Bo Nix? What to know about Oregon quarterback ahead of 2024 NFL Draft
Cleary's 21 help Le Moyne down Central Connecticut State 69-64 in OT
99th annual Pony Swim held in Virginia
Indiana Members Credit Union announced as new anchor tenant at Bottleworks District
DHS shutdown breakthrough comes at cost for Republicans as funding fights nears end
Rubio joins crucial G7 talks as Iran war set to dominate second day
A surprise resignation could open the door for an independent to win a Montana Senate seat
Video: Savannah Guthrie Says She Believes Her Mother Was Taken for Ransom
Stefanik grills University of Michigan leader on lack of audit after string of Chinese national arrests
-
Detroit, MI1 week agoDrummer Brian Pastoria, longtime Detroit music advocate, dies at 68
-
Science1 week agoHow a Melting Glacier in Antarctica Could Affect Tens of Millions Around the Globe
-
Movie Reviews1 week ago‘Youth’ Twitter review: Ken Karunaas impresses audiences; Suraj Venjaramoodu adds charm; music wins praise | – The Times of India
-
Science1 week agoI had to man up and get a mammogram
-
Sports6 days agoIOC addresses execution of 19-year-old Iranian wrestler Saleh Mohammadi
-
New Mexico4 days agoClovis shooting leaves one dead, four injured
-
Texas7 days agoHow to buy Houston vs. Texas A&M 2026 March Madness tickets
-
Tennessee3 days agoTennessee Police Investigating Alleged Assault Involving ‘Reacher’ Star Alan Ritchson