DEF CON 2026 will open in Las Vegas next week with a ban on glasses that can record video, including models that use prescription lenses, conference organizers announced. The ban applies to all Meta‑style smart glasses regardless of lens type, and the conference’s photo policy, last updated in 2023, permits photography only with consent or for on‑stage speakers. The policy prohibits capturing images of individuals in public spaces unless the photographer obtains consent. Eva Galperin, director of cybersecurity at the Electronic Frontier Foundation, said the decision addresses privacy concerns raised by attendees. Organizers of other events have taken similar actions. Monopoly Events, which runs UK Comic Cons, announced a ban on recording‑capable smart glasses after consulting with participants, citing privacy and comfort concerns. Scottish ferry operator CalMac temporarily halted unplanned bridge visits after a passenger wearing recording glasses made crew and passengers feel uncomfortable. Meta’s glasses, developed with EssilorLuxottica under the Ray‑Ban and Oakley brands, are designed to resemble ordinary eyewear and include a hidden camera. Researchers have shown that the devices can be paired with simple apps to identify people in public, and they have prompted separate projects that alert Android users to nearby glass wearers via Bluetooth signals. The UK’s data protection authority is reviewing Meta’s cross‑border data practices after reports that contractors in Kenya reviewed footage taken from toilets and other private moments. The Register has requested a comment from Meta and will update this article if a response is received.