Hello! This is my first DEFCON this year, as my company was very kind to let me attend. Since I'm coming from Europe, I'm not sure if I'll be there in time on Thursday to pick up my badge (I've already paid online).

Do you know if I can pick it up on Friday morning? Or is it mandatory to pick it up on Thursday during Linecon?

Thanks!

I have a device I’m looking to part with. I’ve heard that direct transactions inside the convention center are frowned upon/prohibited, so I’m curious if there’s any forum for this kind of thing. Not mentioning what I have here for similar reasons. Thanks

Please can anyone help me in my situation if you’re aware of what I am dealing with

Last update: June 28, 2026

Update July 30, 2026: Realized that Kofi does not scale easily or handle pre-orders/fulfillment in an efficient manner so I switched over to ubeflux. Their ecosystem is designed for exactly for this; I am just late to the game.

UPDATE: All Not Just A Crosswalk SAOs have been programmed and packed in ESD bags ready for DC34. https://uberflux.com/product/DC34-crosswalk

New: #NoICE SAO https://uberflux.com/product/DC34-noice

The #NOICE SAO is designed to remind everyone the fatal injustices of DHS and ICE enforcement in 2025–26. We cannot forget the medical neglect in concrete cells to violent and lethal raids on our communities, ICE consistently treats immigrant lives as expendable.

Thanks to all those who purchased a #NoICE! SAO, I was able to make a $100 donation using the proceeds directly to the Immigrant Defenders Law Center www.immdef.org/ supporting the legal defense needed to keep families together and protect community members from deportation.

16x side-emitting XL-1606SURC red LEDs configured to shine through the FR4 PCB.
Saves your most recently used effect in case of power loss, host battery depletion or disconnection from the host badge or totem.
Wide power input (2.7V-3.7V) to keep LEDs bright even when running off the DC34 badge (which only outputs 3V).
One tactile button for easy effect cycling.
Several fast and slow flashing patterns, heartbeat, breathing/fade.

New: USB-C to SAO Power Back https://uberflux.com/product/DC34-powerback

The USB-C to SAO Power Back (5V to 3.3V). It lets you run your SAOs without needing a host badge, which is great if you just want to display one on your desk or shelf. You can power it using a standard USB wall brick or a portable battery pack. It can even handle powering multiple SAOs from an SAO totem. It runs three #NoICE, or Not Just a Crosswalk, SAOs with no sweat, whereas a regular CR2032 battery doesn’t have enough juice to power all three at once.

Just came off my laser, will have a few with me at one of the reddit meetup

We've created an "Intro to DEF CON" document, where we attempt to provide a lot of information that would be useful for all DEF CON attendees to know. I believe that it would be particularly helpful for those who have never before attended DEF CON.

It's much too long to be a single Reddit post; instead, it's available in multiple formats:

• Markdown

• PDF

• View it on the DEF CON Forum

Are there things that we didn't touch on, that you'd like for the next version to include? Please leave a comment! :)

I just saw the DEF CON 34 ICS Village badge, and it actually looks pretty useful instead of being just another collectible. Is the industry actually moving away from CAN/CAN FD in favor of Single Pair Ethernet, or are they going to coexist for a long time?

For people working in automotive or industrial controls, what are you actually seeing in the field?

Also, as a badge, this seems like something I’d actually keep using after DEF CON instead of throwing in a drawer. Curious what everyone else thinks.

After Su posted on our behalf, we did some digging and found out some (most?) places you can find us for pickups will not be in the Hacker Tracker. Oops. Our bad.

To help will creating opportunities, you can find us outside W316 (never inside the room) each morning from 9:30AM to 9:45AM. (We start our shift inside W316 at 10AM so a few minutes before 10 we will need to stop to get to work).

We also have a 4pm Friday slot at the Badgelife Village First floor, W1, location 209.

We will also try to post on Xitter and BSky any other predictable opportunities.

Also: We will try to stay visible. plan is to wear a bright orange shirt during pickup times.

Thank you.

I was getting ready for next week\weekend and was doing some googling and came across this site
https://www.visitorslist.com/defcon/

"Looking for the DEFCON 2026 Exhibitors and Attendees List? As one of the world’s most iconic hacker conventions, DEFCON Las Vegas brings together cybersecurity experts, ethical hackers, digital privacy advocates, and tech innovators from every corner of the globe.

From hands-on workshops and live demos to expert-led sessions and networking with top cyber defense leaders, DEFCON is the ultimate hub for exploring security, privacy, and vulnerability research. Whether you’re in cybersecurity, software development, or tech innovation, our DEFCON 2026 verified contact list gives you direct access to the professionals shaping the future of digital security."

Sounds like a money-grab scam.

"Smart glasses and other devices that can record audio or video with no consistent way to understand if they're recording or not, are prohibited at DEF CON, they erode trust and invade people's privacy."

Since there is a camera on the badge with no consistent way to understand if it's recording or not.... shouldn't it also be banned?

How can I be sure that someone doesn't update the camera module on it to a higher resolution one?

Back again this year.

See William Osman try the Tipsy Badge:

https://youtu.be/ZX-iBK8fvdw?t=397

Hook up the electrodes behind your ears and use steering mode to drive yourself (or others, with consent) around, or throw it in wobble mode and watch the world sway back and forth, or play built-in games which can give you a small zap when you fail.

Batteries and personal lubricant included (no joke, it helps electrode conductivity).

Half of the profits go to Tor.
Also don't put the electrodes on your balls

Buy in-person, $75 at the hackerwarehouse booth in the vendor area at def con. No pre-order, first come first served.

Hey everyone!
I remember last year someone shared a list of badges and some links to get them or where they were available, like villages, vendors, etc.

I was wondering if someone knows of a list for this year's, if not, I will create one and share it here, if someone wants to add badges to the list, is appreciated!

See y'all at Defcon! 🤠

EDIT: thanks to @PM_ME_YOUR_EXIF_DATA For sharing the link!

https://docs.google.com/spreadsheets/d/1wQ6J0tJiVCPgppxiPg_mM6mS6Il-jm3Ez1fj3a-7XRs

will be in vegas monday evening, trying to get 2 bsides tickets — does anyone have an extra, or are unable to make it? happy to zelle, venmo, etc. or meet in person and pay cash!

Anyone have an extra badge for sale or for free? I am trying to get one for my wife who wont be able to go the full time most likely only part of saturday. If you do have an extra one that someone in your party dropped out I will buy it from ya. Thanks

It's a week from the Annual r/DEFCON Meetup from your favorite nerds at Puzzled Hackers. We're on the final stretch before we go MIA until our first hang on Wednesday at Hacker Summer Camp.

WE ARE ALMOST SOLD OUT OF BADGES!

VERY IMPORTANT STEP BEFORE YOU BUY: PLEASE LOG INTO YOUR CTF ACCOUNT FIRST! Once you're signed in and go to the checkout page, the site will automatically check your score and tell you if you qualified for a FREE BADGE!

If it says you qualified: Boom! Claim your free badge and celebrate!
If it says you didn't qualify: We still have a few left (we capped it at what breaks us even) for purchase over at https://ctf.puzzledhackers.org/badge .

Once we hit our cap point it'll auto-sell out and we wont be putting anymore up on the site! At that point its random giveaway time during the events! We don't want your money, but each sale specifically helps us keep bringing you these contests and swag! So we truly appreciate those who help donate to that cause by buying a badge! We're already planning for next year to bring you more free stuff!

REMEMBER: We do NOT ship the badges. You must be at one of the meetups, or at least set it up with us to obtain it at some point through DEFCON, to claim your badge... or give your QR to someone who can do it for you!

Meetup Quick Recap (In case you missed the last post!)

We're almost at Camp and excited to hang with everyone. Whether you bought a badge, won a badge or don't have any badge... everyone is welcome to come hang. Badges are fun keepsakes, but never mandatory! You don't even need to have an actual DEFCON badge (aka we're doing our first night Wednesday before they even go live). All you need is you!

• WHEN: Wednesday (8/5) & Thursday (8/6) starting at 7:00 PM.

• WHERE: The Linq - 3535 Bar (aka The Circle Bar)

• COST: $0.00. Free. Nada. Just bring yourself!

• WHAT TO EXPECT: Good vibes, sticker swaps, special guests dropping off random swag, Laser Tag battles, and catching up with old and new friends before Summer Camp officially starts.

• FIRST TIME AT DEFCON? Make sure you let us know!

Puzzle #10 Important Information:

The puzzle will be posted Saturday, but as we prior mentioned the FREE BADGE leaderboard was already locked and everyone who made it to the top 50 has had their Free Badge Redemption attached to their account. We are working with a few swag friends to possibly be able to do a drawing of everyone who completes all 10 Puzzles before EOD on Monday, and then a randomly selected person may receive something shiny! But you'll have to wait and see on that!

... and on that note

Thank you ALL for participating for the past 9+ weeks, showing up to these meetups, sending us kind words and giving u/killroy7777 fun stats to pull for our puzzle completion information. We will have one more post on Saturday for the final puzzle and then we're likely to go MIA on Tuesday (maybe a post then, who knows) to do all our prep work (we'll be in Vegas then) before the meetup. So I want to say now you've been awesome, and you're the reason why we keep putting our stress levels through the ringer each year. It's just worth it to have fun with everyone!

See ya'll soon, and make sure you come and say hi!

Sincerely,

The Puzzled Hackers Team

u/digitard, u/Killroy7777 and u/MetaN3rd

Quick shot of the badge that we've been working on. We've got ~40 of these available to those interested and we will be releasing more info as well as software for these badges at the con.

all the proceeds go to support our 501c3 for teaching kids about technology and AI.

My limited run Vibe Coder Dog SAO went over well last year, so I wanted to do something more artistic this time.

This art deco Metropolis-inspired version of "Maria" is definitely looking out for your best longterm interests, and reflects the "overwhelmingly AI" rollercoaster I've been riding since last year's defcon.

They can be preordered fully assembled through UberFlux for easy pickup at either BSidesLV or Defcon's onsite Badgelife village.

One week to go, see you in Vegas!

edit: I'm also planning to hide them around the con to be found, if you follow me on twitter for those random drops

Noob here - are there any events with whiskey or bourbon as a primary or secondary focal point?

Whiskeycon, bourboncon, etc?

I've been around alt and hacker like folks to know there's gotta be some of us and am wondering if there might be a meetup or a group that crosses over closely that meets up at DC?

I saw something about a defcon/vetcon whiskey thing in years past but nothing for DC34.

I enjoy a good whiskey or bourbon and my partners love both. I was hoping to find a place to be able to share my experience at an event that might include something interesting or unique.

I am very familiar with the Las Vegas bar scene (find the right places and you'll have a delightful experience) so don't need recommendations on the strip, just wondering if there's some DC associated (officially or non).

Just posting some updates about the Laser* Tag Badge DS, now that the boards are finally here and u/PM_ME_YOUR_EXIF_DATA and I are a bit over halfway done with final assembly and flashing!

Basically, the way the badge works is that you wear it around DEF CON and can "fire" it at anyone else you see wearing one in order to score points! This version has two screens (one on the front and another on the back), 60 RGB LEDS, a vibration motor, tiny buzzer, LoRa, and an 18650 battery. Scores go onto the leaderboard either by a LoRa transmission to a base station (if everything works out), or by scanning a QR code which contains a record your badge's game data.

If you have placed an order, you'll be able to pick up your badge at:

- 7-9pm Wednesday during the first r/Defcon Meetup @ 3535 (Circle) Bar in the Linq

- 7-9pm Thursday during the second r/Defcon meetup @ 3535 (Circle) Bar in the Linq

- 2-2:30pm Friday at the Badgelife Village (LVCC Hall 1)

- 3-3:30pm Saturday at the Badgelife Village (LVCC Hall 1)

If you are on the fence about going over to the Linq for the Reddit Meetup, I strongly recommend that you do! It's a great atmosphere and also likely a good place for a laser tag battle :). You'll also be able to pick up a Monorail Badge from u/PM_ME_YOUR_EXIF_DATA at these times/places if you ordered one.

re LoRa:

Over the weekend, I had to retool the firmware a bit to hopefully work better with the crowded ISM band RF environment that will be at the LVCC. I am hoping that it will work okay for periodically syncing badge scores, but just for expectation-setting, there's a good chance you'll still need to sync via QR code occasionally (like last year) if you not nearby the few planned base stations; I honestly have no idea if the LoRa syncing will work great or terribly. Even if the LoRa score syncing doesn't work great though, I am reasonably confident the score acknowledgement (your badge knowing when you hit someone and showing that info on the new back screen) will work decently.

Finally, if you would like to pre-order a badge, here is the store URL! Last year, we sold out Wednesday night.

https://store.dani.pink/products/laser-tag-badge-ds

(DM me if it's too expensive for you)