The best use of QR codes

Does anybody configure their phone to automatically scan photos for QR codes and visit the links?

When my phone's barcode reader app sees a web link, it fetches the page's title to display next to the actual link. So it is going to that web server and fetching resources by itself. Even though it isn't actually rendering the page and running javascript, it might be exploitable.
- But that's the barcode app - is it always running, looking for barcodes in all the photos you take? Because there are already shirt with giant barcodes on them - presumably just artistic with no meaning, but who knows?
I think as a precaution, barcode scanners stopped automatically going to links.
Even if a link isn't malicious, you can still get someone's IP address or device fingerprint.
- IP would not be an issue, your phone is behind cgnat when using a mobile connection
I configure my phone to automatically follow the links from scammer texts.
My phone's camera app just doesn't scan qr codes. It's actually really frustrating. I refuse to install a specific qr scanner, but I'd still like the ability to scan a menu code at restaurants or to get the WiFi connection at a hotel....
Mine scans but doesn't follow (and it doesn't scan in video mode)

Except if they were halfway intelligent they wouldn't have it go automatically to the site.

And when you do this and something goes really wrong criminal charges get laid.

I'm not sure if you could actually get criminal charges for this unless you were hosting the malware in which case that's another issue. It would essentially be the same as walking around with a website URL on your shirt. The observer is responsible for typing in the URL or scanning the code and what they decide to do on the website that follows.
- There's the argument that you distrubuted it.
- I tend to agree that this is how it should be, that doesn't mean that's how it is. If you walk around with a T-shirt that says "kill all CEOs" along with where to find them, you're going to run into some trouble, despite being a similar situation- you're just giving instructions, it's up to the viewer what to do with them.
Except that people are not halfway intelligent.
- Often the apps are from what I know. Most ones I've used don't open the link straight away
I'm ok just targeting the ones that aren't halfway intelligent for now.
Can we just get a website that plays a soundbite at full volume screaming about how they person is bad at privacy practices, maybe with Korn in the background for maximum embarrassment?
- Finally a good use for these music generator AIs
Criminal charges? It’s called the 1st amendment bro.
- Not if it incites violence, causes harm or any of the other carve outs in the first amendment of the USA.
  I am aware that the post is supposed to be funny, and you are most likely making a joke, but this is the internet and these sort of disclaimers tend to be necessary.

Why not just use this one?

I knew what it would be. I still grabbed my phone. I saw youtube. I still clicked it.
- At this point I do it just to feel something
- YouTube? Ok, I was going to guess goatse, but guessing not now.
You wouldn't get this from any other guy.
Dairy Queen, word for word.
I'll skip it :)

Snowcrash

i ge en i ge en nu ge en nu ge en us sa tur ra lu ra ze em men...

The largest QR code can hold up to 3 kb of data, which is more than enough to write a nasty virus in an injectable script if aimed at specific devices/apps. The main hurdle is breaking the app to execute the code instead of treating it as a string. It's the Drop Bobby Tables joke. Developers hopefully don't fall for this anymore.

Anyway. Making a shitty link and leading people there isn't a new idea. You don't even need a t-shirt. Hackers already place their own printed QR labels on top of otherwise real codes, and the user might not even notice, because they'll be redirected to the right site after the dirty deed is done dirt cheap.

here's an idea : let it redirect to a URL but with it's query params tweaked so it automatically attempts an SQL injection on the website when loading

Outsourcing hacking? Not bad.

X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

Correct :-) Has been done:
https://web.archive.org/web/20210116105900/https://www.revk.uk/2020/01/eicar-test-qr.html

Depending on what they plan to use the video for, a middle finger can be sufficient.

Having worked in TV news, I’ve long thought the way arrested politicians or whoever that are trying to avoid being filmed leaving a courthouse by holding a folder or coat in front of their face should instead just hold both middle fingers up right in front of their face. The image won’t be used, and if it is, it will make it very clear how they feel about the citizens.

Tragically they were beaten to death in broad daylight by police, but there was no surviving evidence.

A friend sent me this. Doesn't work on most phones now, just older androids I think. It's meant to teach you not to scan unknown QR codes by causing androids to restart on scanning.

Sounds a bit Snowcrashy.

So I thought I pulled a great prank once. I made a QR code that directed to lemonparty. I used an online sticker service's free trial to print a bunch up with my friend's Instagram at the bottom. I travel all over for work so I was going to put them everywhere.

My problem was I printed them in yellow and they wouldn't scan. I told my friend and he thought it was a funny idea just like I knew he would, not a malicious prank. Wish it had worked.

@compostgoblin I am up for one of those.