BRUSSELS — Privacy regulators want people wearing smart glasses in public to look and sound like a truck backing down a road.

Europe’s powerful data regulators have made stringent new recommendations on how smart glasses should alert people that the wearable devices are filming, including a combination of flashing lights, audio alerts and notifications sent to the phones of people nearby.

The European Data Protection Board (EDPB), made up of national privacy regulators across Europe, issued a statement about smart glasses on Tuesday, following a meeting in Brussels.

Privacy regulators are putting forward a united front on smart glasses, as privacy concerns about the wearable technology have multiplied since videos made with them have begun spreading online without the knowledge or consent of those being filmed.

The statement is not legally binding but will guide how privacy regulators in Europe assess whether smart glasses users and manufacturers are complying with EU privacy rules like the General Data Protection Regulation (GDPR).

The regulators said smart glasses manufacturers should implement a combination of transparency measures to make other people aware that they are being recorded.

The measures may include lights or sounds when users are recording, requiring smart glasses users to activate them with an audible voice command, sending notifications to the smartphones of people nearby and other design “clues” to help people spot smart glasses.

The group of privacy regulators said that not only should users of smart glasses respect other people’s privacy but that the devices’ manufacturers and people providing connected apps or services may also be responsible for making sure they comply with privacy rules.

The GDPR applies to companies and organizations, and doesn’t apply when people process personal data in a household context. The regulators said this household exemption should be “narrowly interpreted” when it comes to smart glasses, and would not apply when someone shares photos or videos of others “to an indefinite number of persons on a public social media account.”

Tech firms like Meta have pitched their smart glasses to consumers on the basis that they are sleek and discreet. Meta has included an LED light in its smart glasses, which activates while recording, which it has said is a key privacy safeguard.

Samsung and Google have also recently announced that they’re collaborating on a new line of “intelligent eyewear” set to launch later this year, and Apple is reportedly aiming to hit the market with its own smart glasses by the end of 2027. 

The regulators’ statement could now force smart glasses manufacturers to reassess whether and how they sell smart glasses to European consumers. The EDPB called for industry-wide standards to be developed to make sure people are able to spot smart glasses and understand how they process data.

The European group of privacy regulators also commissioned a study into the social acceptability of smart glasses, published today.

WARSAW — NATO must modernize its military infrastructure to move forces and equipment from Western to Eastern Europe “where we would expect any future conflict,” U.S. Ambassador to NATO Matthew Whitaker said Monday.

Speaking on a panel at the Warsaw Security Forum, Whitaker’s comments came as Washington reviews its military presence on the continent — with the ambassador saying that Europe ranks fourth among Washington’s strategic priorities, behind homeland security, the Western Hemisphere and the Pacific.

He pointed to outdated military bases, fuel supply chains and agreements governing the stationing of American troops in Europe as areas requiring attention under the ongoing U.S. force posture and basing review.

He emphasized the importance of military mobility and “moving things from the west to the east,” citing discussions with EU Defense Commissioner Andrius Kubilius. European officials warn that Russia could be ready to attack a NATO country by the end of the decade.

Whitaker did not announce any decisions to relocate or withdraw American forces. He nevertheless made clear that Washington is reassessing its global commitments to avoid spreading its military resources too thin.

“Superpowers and great global powers have mostly had challenges when they get overextended,” Whitaker said, adding that U.S. President Donald Trump wants allies to become “capable and not dependent.”

“The United States isn’t stepping back. We’re just asking you to step forward,” he said.

Whitaker also criticized countries that are falling short of their defense-spending commitments.

He said he had recently delivered a “very strong message” to political leaders in Czechia. The country’s defense spending for this year is approximately 1.8% of GDP, falling short of NATO’s current 2% benchmark.

European governments must continue strengthening their armed forces, he argued, warning that the continent still lacks many of the capabilities it needs to defend itself.

Kubilius, meanwhile, stressed the need to reduce Europe’s military dependence on Washington, highlighting EU efforts to develop its own drone defenses, satellite communications and surveillance capabilities.

Polish presidential adviser Marcin Przydacz, also on the panel, urged Western European allies to accelerate defense spending while emphasizing that NATO, rather than the EU, must remain responsible for Europe’s collective defense.