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Sensors can read your sweat and predict overheating. Here's why privacy advocates care

Published

2 years ago

August 24, 2024

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.

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Trump's national security team comes to convince Congress to back Iran war

Published

6 hours ago

March 4, 2026

Press Room

Trump's national security team comes to convince Congress to back Iran war

President Donald Trump’s top national security advisers were to spend much of the day on Tuesday making the case to members of Congress for the U.S.-Israel war on Iran, as Democrats and some of his fellow Republicans clamored for more information.

World

Iran’s senior clerics ‘exposed’ after building strike in Qom, succession choice looms

Published

7 hours ago

March 3, 2026

Press Room

Iran’s senior clerics ‘exposed’ after building strike in Qom, succession choice looms

NEWYou can now listen to Fox News articles!

Senior Iranian clerics would have been left “exposed” after an Israeli airstrike hit a meeting place where they were supposed to be convening Tuesday — days after a strike leveled the Tehran compound of Supreme Leader Ayatollah Ali Khamenei, a defense analyst has claimed.

The clerics, members of the Assembly of Experts, had reportedly planned to meet at the location in Qom to deliberate succession plans for Khamenei, who was killed in the strikes, according to The Times of Israel.

“This second strike would be another embarrassment to what has been left of the regime,” Kobi Michael, a senior researcher at the Institute for National Security Studies and the Misgav Institute, told Fox News Digital.

“It indicates intelligence dominance and superiority because any movement is detected, meaning they would feel exposed,” Michael added.

Iranian Supreme Leader Ayatollah Ali Khamenei was killed in an Israeli airstrike Saturday. (Getty Images)

“As of now, the leadership would feel insecure and hunted, with all of their plans collapsing one after another.”

“They would feel totally isolated and understand that the biggest risk might come from home — from a potential uprising next,” he added.

Israel Defense Forces spokesman Brig. Gen. Effie Defrin confirmed that the Israeli Air Force struck the building where senior clerics had planned to assemble, The Times of Israel reported.

KHAMENEI’S DEATH OPENS UNCERTAIN CHAPTER FOR IRAN’S ENTRENCHED THEOCRACY

A general view of Tehran with smoke visible in the distance after explosions were reported in the city, Monday, in Iran. (Contributor/Getty Images)

It remains unclear how many of the 88 members were present at the time of the strike, according to an Israeli defense source cited by the outlet. The second strike on Iran’s leadership comes amid a broader military campaign.

As previously reported by Fox News Digital, U.S. forces have struck more than 1,700 targets across Iran in the first 72 hours of Operation Epic Fury, according to a U.S. Central Command fact sheet.

The campaign is aimed at dismantling Iran’s security apparatus and neutralizing what officials describe as imminent threats.

According to U.S. Central Command, targets have included command-and-control centers, the Islamic Revolutionary Guard Corps Joint Headquarters, the IRGC Aerospace Forces headquarters, integrated air defense systems and ballistic missile sites.

FIREBRAND ANTI-AMERICAN CLERIC ALIREZA ARAFI SEEN AS CONTENDER TO REPLACE IRAN’S KHAMENEI

The USS Thomas Hudner fires a Tomahawk land attack missile in support of Operation Epic Fury, Sunday, while at sea. (U.S. Navy/via Getty Images)

“We need strategic patience and determination, and in several weeks most of the job will be accomplished,” Michael added. “Even if the regime does not collapse, Iran will not be like we used to know.

CLICK HERE TO DOWNLOAD THE FOX NEWS APP

“I assume that the U.S. and Israel will establish a very robust monitoring mechanism that will enable them to react whenever the regime tries to reconstitute its military capacities again.”

Emma Bussey is a breaking news writer for Fox News Digital. Before joining Fox, she worked at The Telegraph with the U.S. overnight team, across desks including foreign, politics, news, sport and culture.

World

Hungarian veto proves EU needs less unanimity, says new Dutch PM

Published

9 hours ago

March 3, 2026

Press Room

Hungarian veto proves EU needs less unanimity, says new Dutch PM

Hungary’s last-minute veto on the €90 billion loan to Ukraine highlights the need for the European Union to move away from unanimity, Rob Jetten, the new prime minister of the Netherlands, said on his first trip to Brussels since taking office.

“The new Dutch goverment is in favour of less and less decision-making by unanimity on the European level,” Jetten told a group of media, including Euronews, on Tuesday.

“This is a clear example of why that is important because we cannot explain to our constituents that Europe is sometimes way too level in reacting to great issues that affect us all,” he added.

Jetten called on his Hungarian counterpart, Viktor Orbán, to abide by the delicate deal that the 27 EU leaders reached in December after fraught negotiations. The compromise saw Hungary, Slovakia and the Czech Republic promising the necessary unanimity to amend the EU budget rules in exchange for being exempted from the joint borrowing.

Officials and diplomats in Brussels believe that by vetoing a critical piece of the loan at the last stage of the legislative process, Orbán has breached the principle of sincere cooperation that binds the bloc’s decision-making.

“If you reach political agreement on the Council level, we expect every member state to uphold that agreement. And if not, it’s a big task for the European Commission take action,” Jetten said.

In the new coalition programme, the Netherlands calls for the “simplification” of the Article 7 procedure that can deprive member states of voting rights when they commit grave violations of the rule of law. Hungary has been under Article 7 for years, but there has never been sufficient political momentum to move to the harder enforcement phase.

“It is absolutely necessary that we support Ukraine in the months to come to make sure they can continue their fight against Russian aggression,” Jetten went on.

“With less and less American support for the Ukrainians in terms of money and weapons, it is up to the Europeans to deliver.”

Orbán’s veto centres on the interruption of Russian oil supplies through the Druzhba pipeline, which Kyiv says was attacked by Russian drones on 27 January and has remained non-operational since then.

But Orbán says Ukrainian President Volodymyr Zelenskyy has deliberately shut down the pipeline for “political reasons” to influence the results of the upcoming Hungarian elections. Orbán trails in opinion polls by double digits.

Caught between the two rival camps, the European Commission has asked Zelenskyy to repair Druzhba and Orbán to lift his veto. Meanwhile, Hungary and Slovakia have proposed a fact-finding mission to inspect the damaged section of the pipeline.

“We expect the European Commission to solve this issue,” Jetten said. “If it’s helpful to have any fact-finding missions on the pipeline to fix this issue, I’m open to it. But everything begins with: a political agreement at the Council level is a political agreement.”

‘Too early’ for a date on Ukraine’s accession

Among the first debates facing Jetten as premier is the future of enlargement, a topic on which the Netherlands has expressed well-known reservations in the past.

Zelenskyy is advocating for a specific date for Ukraine’s accession to be enshrined in a prospective peace deal, something that could offset the pain of territorial concessions. Last week, he openly suggested 2027 as an aspirational benchmark.

The Commission says it cannot commit to a clear-cut date but is working on legal avenues to revamp the notoriously complex process and ensure the Ukrainian people have greater certainty in their path to membership.

Asked about the potential reform, Jetten said enlargement should be reconsidered from a “geopolitical perspective” but urged the bloc to be “careful” with next steps, warning that the essence of the European project risks being undermined.

“We are very open-minded to look into broader support for these (candidate) countries, but moving too fast is not the way to move forward,” the premier said.

“I think, at the moment, it’s not possible to set a date for enlargement with Ukraine, but it is possible to talk with them, and I will do that with President Zelenskyy, (about) how Europeans can support Ukraine in the important reforms that they have undertaken. But at this moment, it is too early to set the date.”

Jetten also touched upon the US-Iranian strikes on Iran, which have pushed the Middle East into uncharted territory. Wholesale gas prices have soared in reaction to the war, prompting fears that Europe might soon face a prohibitive bill to refill its underground reserves, which are running low after the heating season.

“Obviously, the Iran war can have a big impact on strategic reserves, not only in Europe but also in Asia. So we have to prepare ourselves for any case that this war will continue for many more weeks and impact the strategic reserves in the Netherlands and abroad,” he said, noting extra measures would be taken “if necessary”.

“I think the broader concern is what this war and everything that’s going on in the Strait of Hormuz is going to affect in terms of pricing.”

‘The Netherlands is back’

Jetten’s D66 party has formed a minority goverment with the liberal VVD and the conservative CDA, all of which support European integration. His tenure puts an end to the fractious four-party coalition headed by the right-wing, Eurosceptic Party for Freedom (VVD) of Geert Wilders, which was marked by constant disagreements.

Among the priorities, his executive has pledged to ramp up defence spending, simplify regulation, promote new technologies and expand renewable energy.

“As a founding (member) and the fifth (largest) economy within the EU, the Netherlands is back at the table to work closely together with everyone here in Brussels and our allies within the EU,” Jetten said.

“We see a lot of opportunities to strengthen the European economy and competitiveness, and also to make sure that we do our job with a lot of tax-based money to invest in the European defence and the European defence industry.”

Jetten and the other 26 leaders are heading for a no-holds-barred fight on the next Multiannual Financial Framework (MFF), the bloc’s seven-year budget. Brussels has proposed a €2-trillion template that some capitals consider politically unpalatable.

Where to cut spending will be a major fracture line. Germany, the Nordics and the Baltics want a greater focus on strategic priorities, while Spain, Italy and Eastern Europe want to preserve the prominence of agriculture and cohesion funds.

The Dutch premier made it clear that the next budget should focus on the big transitions shaping the continent’s future: defence, technology and climate.

“A modern MFF doesn’t mean an exploded MFF in terms of numbers,” he said.

“The Netherlands will look into the numbers very closely, and we will have a lot of debate on this topic in the months to come.”