Smart glasses are moving rapidly from experimental wearable technology into everyday computing, but their ability to record people discreetly is creating a parallel wave of privacy and harassment concerns.
Paris prosecutors have opened a criminal investigation into suspected sexual harassment involving smart glasses following complaints connected to a social-media trend in which women were allegedly filmed on the street without consent and the videos were subsequently posted online. Prosecutors did not identify the brand of glasses involved.
The investigation adds a human-impact problem to one of the fastest-growing categories in wearable computing: when cameras become difficult to distinguish from normal clothing, the people being recorded may no longer know when data collection is happening.
Meta’s glasses now dominate the category
Meta’s smart glasses, developed with EssilorLuxottica, currently hold an estimated 76% share of the global smart-glasses market. Reuters reported that Meta’s AI-enabled glasses sold 7 million units last year, while EssilorLuxottica’s latest figures indicated continued rapid growth in 2026.
The devices include an embedded camera and a small indicator light intended to show when recording is active.
But France’s data-protection regulator, CNIL, has questioned whether those signals are enough. Its guidance says smart glasses can capture images, videos and voices of nearby people without those individuals being fully aware. Because the devices can resemble ordinary glasses, CNIL says people may struggle to tell whether they are being recorded.
French users are already uneasy
The concern is not limited to legal experts.
CNIL surveyed 2,128 French adults in January and found that 67% believed smart glasses pose a risk to privacy. Respondents also expressed distrust, unease, worry and annoyance around the devices.
The regulator has separately received fewer than 10 workplace complaints involving smart glasses and increasing questions from companies asking whether they can ban the devices at work, according to Reuters.
CNIL official Nacera Bekhat said the devices create real challenges around informing people that they are being recorded and securing consent when required.
A recording light does not equal consent
The product-design problem becomes particularly difficult because smart glasses shift responsibility toward people standing around the wearer.
Internet-safety organization e-Enfance’s Ines Legendre shared that seeing an indicator light does not mean a person has agreed to be filmed, much less agreed for that recording to be distributed online.
CNIL similarly warns that widespread wearable cameras could normalize mobile surveillance that is “almost invisible and ubiquitous”, potentially changing how people behave in public and private spaces.
The issue is now spreading internationally. Reuters reported that some UK cinemas have prohibited smart glasses, a German consumer organization has filed a criminal complaint concerning their sale, and Australia is considering restrictions on camera-equipped glasses in government workplaces.
For hardware and product teams, the challenge goes beyond adding a brighter recording light.
Smart glasses promise to make computing less intrusive for the wearer by removing the need to hold a phone. But the same design can make computing more intrusive for everyone else.
That tension may become one of wearable technology’s defining product problems: creating computers people can use naturally without making everyone around them wonder whether they are being recorded.
