DEF CON banned recording glasses. Prescription recorders are not exempt.

DEF CON banned Meta-style glasses with recording capability for DEF CON 34. The conference ran 6–9 August 2026 at the Las Vegas Convention Center West Hall. Surreptitious filming is a Code of Conduct violation. There is no exception for prescription glasses that record.

Pack ordinary eyewear. If you take a photograph, use a camera people can see, and get a yes from the faces in the frame. That is the policy DEF CON posted ahead of the doors.

The Register’s Connor Jones filed the rule on 28 July 2026, more than a week before the con. DEF CON’s own social post went up around 27 July. The sources are those dated notices and the conference’s published photo policy, not a hallway argument in August. The rule was up before anyone badged in.

Eva Galperin, director of cybersecurity at the Electronic Frontier Foundation, put a public line on it: “Love to see a ‘no pervert glasses’ policy at DEF CON.” That sentence is Galperin’s. The line is hers. EFF is not the conference. DEF CON wrote the rule. Galperin welcomed it. Two institutions, one week in late July, one ban on recording eyewear.

Meta’s public description of its recording glasses is that an LED indicator lights when the device is capturing, and that covering the light stops capture. That is Meta’s claim. It is not tested here. Nobody is instructed here to cover a light. The claim sits here because the product’s maker put it on the record, and because a conference decided the product class still does not come through the door. A vendor LED is not a conference policy. The policy is: leave the recording glasses out.

Prescription is the edge people asked about. DEF CON’s answer, in the pre-con notes, is that recording prescription glasses are not exempt. If the frames record, they are in the banned class. If the frames only correct vision, they are glasses. Bring the second kind. That distinction is a sentence, not a loophole guide. Brands, models, and ways to make a recorder look like a corrector stay off the page. Pack the pair that does not capture.

Photographs are still allowed. The method is old. A phone or a camera that looks like a phone or a camera. Faces in the frame get an affirmative yes. Recognizable equipment is the point. Hidden equipment is the problem. The Code of Conduct already treated surreptitious filming as a violation. The 2026 note names a product class that made hidden easier. Naming the class is how a conference updates a rule without writing a new constitution.

Skift Meetings, 17 August 2026, put DEF CON in a roundup of venues that banned recording glasses this year. The same roundup named U.S. Air Force settings, New York courts, and UK Comic Con. A conference, a military, a court system, and a comics floor are four different doors. In 2026 they posted versions of the same line: recording eyewear stays outside. Those four bodies are not claimed to have coordinated. It is claiming a dated roundup put them on one list. The list is the industry weather. DEF CON is the hall covered here.

IDC’s projection, as carried in that coverage, put display-less smart-glasses shipments around 13.6 million in 2026. A shipment number is not an attendance number. It is context for why doors are writing the rule now. More frames in the wild, more venues putting a sentence on the badge site. Attribute the 13.6 million to IDC via the roundup. Do not treat it as DEF CON’s headcount.

West Hall in August is a badged space. Badged space has always had a photo culture. Hallway shots, village shots, badge shots, the CTF pit from the rail. The 2026 rule does not kill that culture. It kills a class of device that records while looking like furniture on a face. A phone up is a phone up. Glasses down at a laptop can be glasses or they can be a camera. DEF CON chose not to adjudicate that in the moment. They chose a ban.

No exception is the phrase that does the work. Conferences like exceptions. Medical. Press. Vendor. DEF CON’s note, as reported in late July, does not carve recording prescriptions out. That is stricter than a “please don’t be creepy” paragraph. Strict is the news. A hacking conference that lives on hallway conversation is a conference where a silent recorder is a different object than a noisy one. The Code of Conduct already knew that. The glasses ban is the Code of Conduct getting a product name.

Galperin’s “pervert glasses” line is blunt on purpose. It names the social harm, not the silicon. Her words stay. The policy words stay. Policy: Meta-style recording glasses are out. Prescription recorders are out. Surreptitious filming is a CoC hit. Photos: visible camera, yes from faces. Pack non-recording eyewear. Those are five sentences a badge table can hold.

What this page will not do is teach anyone to defeat an LED, to fake a prescription, or to record without a light. Defeat is out. The ban exists because the conference does not want the device in the building. Reporting the ban is not a puzzle. The puzzle editor has a different desk.

Connor Jones’s 28 July piece is the first mainstream clip hanging the calendar. DEF CON social, 27 July, is the conference’s own timestamp. Doors 6 August. Four days of con. Skift’s 17 August roundup is the after-action weather report that other venues were writing similar lines. The date is 30 August, three weeks after close, because the rule that governed the week is still the rule.

A Code of Conduct is a document people only read when it names a thing they brought. Recording glasses were a thing people brought. In 2026 the document named them. That is how CoC updates show up in a newspaper: a product class, a date, a venue, a quote from someone who works on the civil-liberties side of the same industry. Galperin works on that side. DEF CON runs the venue. Meta ships a product. Three names, one banned class.

Air Force. New York courts. UK Comic Con. DEF CON. Four doors. The roundup’s point is that recording eyewear became a facilities problem, not only a hacker-con problem. A court does not run a CTF. A comics floor does not issue Black Badges. They still posted a glasses line. DEF CON is the hall. The other three are the list that says the line is not eccentric.

Visible cameras remain the culture. Village photographers still work. Press still works. Attendees still put a phone over a badge or a sticker. Affirmative permission is the extra beat for faces. That beat was already good manners. In 2026 it is also the printed rule next to the glasses ban. Good manners with a date is policy.

This report is not a product review. It is to report that the largest underground conference in the field told a product class to stay in the bag, did it in writing in late July, did not exempt recording prescriptions, and got a public welcome from EFF’s cybersecurity director. The week then happened. 6–9 August. West Hall. The rule was the rule. This is the story of the rule.

People with ordinary glasses walked in. People with recording glasses were told not to. People who wanted a photograph used a camera that looks like a camera. That is a small, enforceable, dated change in how a con handles a new shape of microphone. Small and enforceable is what a CoC wants. Dated is what a newspaper wants. 27 July, 28 July, 6 August, 17 August, 30 August. Those are the days on this file.

Leave the recording frames at the hotel. Bring the pair that only helps you see the stage. If you want a picture of a friend at a village table, hold up a phone and ask. If you want the conference’s own words, they were on the site before the con. The glasses stay in the bag.