The social security card says it was issued to “ELON MUSK” but my name is “Elon Musk”. Direct all these supposedly mine tax bills to “ELON MUSK” and leave me alone.

Imagine if Intel snapped and disabled Stephen Hawking’s wheelchair and computer, and he needed to pay for a new one with a different voice, absolutely helpless without it.

Not open source, which is a red flag for me. There are QR scanner&generator apps on F-Droid, and you can check the source code that they do NOT send the scan result to some server and do NOT sneakily take a pic of you with the front camera.

Here is what you should do for security around QR codes.

In cases when privacy isn’t important (here, Google can match my Google and Lemmy usernames, and I leave a public comment), you can use Google Lens (in browser!) and crop the area of focus, and unlike most QR readers that only apply a linear transform (perspective correction), it works for QR codes on bent surfaces.

Google Lens is indeed one of the best, and it failed for me with direct image upload (incl. transparency). It worked with a screenshot so maybe the size threw it off.

Does it really scan when both timing patterns (zebra stripes between the three corner “squares”) are interrupted?

Edit: Not even Google Lens can scan it. (Edit edit: worked fine with screenshot.) Next time, avoid the red regions when putting logos etc. on mid-size (3+1 “squares”) QR codes:

🟥🟥🟥🟥
🟥🟩🟩🟩
🟥🟩🟩🟩
🟥🟩🟩🟥

You can rotate the code of course but not flip it.

There used to be czech-lemmy.eu and kyberpunk.social instances, actually. Both ended less than a year ago.

Does not show up in my client, and the desc does not either when opening your profile.

?

Is this pair of tones used in the movie?

There is a song using just 2 tones a semitone apart in its melody, Šel nádražák na mlíčí (“When a train stationeer went foraging for dandelion greens”), allegedly written by Czech genius Jára Cimrman in the early 1900s.

Found a Czech. That makes about 7 of us. We should start a community!

Czechia… except we are landlocked. Poland, then?

Time concerns aside, this will just make GOP say “they have their own idea of truth”. Which is correct but the causality is vice versa.

Nope. But I guess a mirror of WebAssembly Studio would still be the best starting point despite its slow development lately. The WAsm plugin for VSCodium was broken for me too.

Note that unlike JS, WASM won’t run from file:// URLs; you need to run a local http server or commit to an online repo to run your code. There might be an about:config option to change this but many IDEs (incl. WA Studio, presumably) come with servers for this reason.

A forgotten one is webassembly.studio, an in-browser IDE for creating WASM projects with way less pain than other methods. It got discontinued the year I needed it for my school project. It was open source but I failed to rehost it myself and public mirrors only appeared after I spent days trying to make Emscripten work, tore my hair out over WebGL and then finally painfully built the whole thing with CSS (and a bit of JS; yes, it was indeed a disaster).

A scammy Google ad that I posted to !shittylifeprotips@lemmy.world.

Dod you just look up yōkai hoping they would all be like Touhou girls?

Google has. The Zürich university fella needed his own data classification monkeys.

It’s the individual pins and their holes that matter for DIN and similar connectors. Female.

Then it’s not a tracking parameter of course.

That is very decoder-specific. The most common QR reader apps are the Camera app on iPhones and Google Lens for Android so you’ll want to target one of these (though Google Lens might be using cloud processing for that). There probably won’t be any exploits in the image processing part but you obviously can write arbitrary data (including ASCII control characters such as CR, LF, null) into the “data” part of the QR code, as the encoding mode and data length is stored in the first 4+(n*8) bits of where data would be instead of null byte termination. Normally, the data is then right-padded with repeating 0xEC11 (or not and then error correction follows (number of bytes in the error-correction part is defined by the size and ECC mode indicated in another region).

It’s easier to take precautions though. You probably don’t have an insulated USB port or throwaway host device but handling QR codes safely just takes basic tech and skill.

Important advice:

• Don’t use apps that auto-open URLs in QR codes when pointed at!
• Make sure the app shows the full content of the QR code and lets you peruse it indefinitely before you open the link!
• Know the structure of URLs and common pitfalls!

Recommendations:

• Be extra suspicious if there is no URL printed next to the code, or if the printed URL is different.
• Use an open source reader app (most QR codes don’t contain secrets but it’s got permission to use either camera!) that does not resolve Punycode (Unicode in TLDs).
• Strip any tracking parameters you spot before following any URLs.
• Be careful if the QR code could have been easily tampered with (on a sticker over the original one, or on a plain sheet of paper inserted into a plastic wrap together with the rest)

I think today’s generation’s equivalent is free Wi-Fi networks. Kids without mobile data in an area without an established public network will connect to just about any open one unless the SSID includes “LaserJet” or similar.