8 ms·

qrencode -t utf8 'WIFI:T:WPA;S:network;P:password;;'

• floatingatoll 5y ago
  Did you type this in from memory?!
  • captn3m0 5y ago
    There is no real specification. This is the best source[1], which documents QR standards. >There are some standards -- de facto and otherwise -- already in use. This wiki attempts to catalog some possible standards for encoding various types of information, and suggest a standard action associated to them. [1]: https://github.com/zxing/zxing/wiki/Barcode-Contents#wi-fi-network-config-android-ios-11 https://github.com/zxing/zxing/wiki/Barcode-Contents#wi-fi-n...
    • mdaniel 5y ago
      Damn, that's saddening, but also answers a question I had about what the escape character is for a password containing `;` -- I guess there's no specification to tell me :-( OTOH, I guess a "standard" is whatever the common implementations accept anyway, so if one could dig up the source to the WiFi QR scanner in source.android.com that's the 2nd best thing
      • jaflo 5y ago
        No specification, but the linked website mentions that they “propose a syntax like "MECARD" for specifying wi-fi configuration” and then later: > Special characters \, ;, ,, " and : should be escaped with a backslash (\) as in MECARD encoding.
  • mdaniel 5y ago
    In fairness, the string doesn't seem insaneo: T:=Type S:=SSID P:=Password then only the leading and trailing chars need to be "remembered", plus whatever the escape character is for that password string (or maybe even the SSID -- I'm not super clear on what characters can be in an SSID)
    • bigiain 5y ago
      > I'm not super clear on what characters can be in an SSID) I hear “%s%s%s%s%p” is the preferred SSID these days…
      • sp332 5y ago
        For those playing along at home https://arstechnica.com/gadgets/2021/06/connecting-to-malicious-wi-fi-networks-can-mess-with-your-iphone/ https://arstechnica.com/gadgets/2021/06/connecting-to-malici...
  • prophesi 5y ago
    Not OP, but I found that string from viewing the source code for Card.js in the sources tab.
• CraneWorm 5y ago
  A decade old SO adage comes o mind: "This should be the accepted answer."
• SubzeroCarnage 5y ago
  For WPA3 WIFI:S:SSID;T:WPA3;P:PASSWORD;;
  • m0dest 5y ago
    Can you elaborate? Why doesn't the traditional WPA1/WPA2 string work? What happens if a non-WPA3 client scans this new one?
    • SubzeroCarnage 5y ago
      Late reply, but when I was setting up WPA3 a few months ago I used Android 11 as a reference and that is what it spits out from the Settings share screen. Without it iirc, it would search and search and never connect.
• tomjen3 5y ago
  >zsh: command not found: qrencode
  • deleted 5y ago
    [deleted]
  • chadlavi 5y ago
    brew install qrencode && !!
• vletal 5y ago
  Since OP intended to learn a bunch of technologies while developing this project I'd be amused to see a version of this based on qrencode complied to WASM.
  • IgorPartola 5y ago
    Why is this not a neural network?
    • jdrek1 5y ago
      And why no blockchain?
      • pawelduda 5y ago
        Mint a WiFi Login Card NFT
        • cto_of_antifa 5y ago
          I audibly lolled
• the_cat_kittles 5y ago
  wow ok, so you expect me to have a computer (?!) with: - a keyboard? - access to a terminal??!?!?! - ability to install qrencode??? - knowledge of copy and paste!?!?! - some way to edit the command you posted to my specific username and password?! franky this is ridiculous when i could just make a repo that uses make, docker, yarn, npx, nginx, react, and jest /s
  • jacobmischka 5y ago
    This is a staggeringly passive aggressive comment, who hurt you?
    • plandis 5y ago
      I disagree and I found both the command line and ui versions interesting, kudos to both OP and the CLI poster :) As stupid as it sounds I didn’t realize there was a wifi scheme for a uri-like syntax on phones
      • jacobmischka 5y ago
        I definitely found the qrencode command interesting, just not the reply to which I replied.
  • bigiain 5y ago
    No no no! You’re supposed to deploy qrencode in a kubernates cluster on Oracle cloud to run it, and then go to your WiFi base station and change your SSID to “network” and it’s password to “password” <grin>
  • Satam 5y ago
    And access to Linux. Which most of non-tech people are not going to have.
    • opan 5y ago
      Works on Android using Termux. libqrencode is a package in its default repo. From what I understand, Android is quite popular.
• 40four 5y ago
  I wouldn’t ask if it wasn’t the top comment, on the current #1 front page story, but Can someone please explain this command, and why it is presumably given as a criticism of this submission?
  • enjoyyourlife 5y ago
    The site requires you to put in your WiFi Network and Password even though it did not have to. (However nothing is actually sent to the server)
    • playpause 5y ago
      > even though it did not have to How could it work if it didn’t?
      • deleted 5y ago
        [deleted]
      • mikkelam 5y ago
        By generating the QR code locally via JS. You can check the source code https://github.com/bndw/wifi-card/blob/master/package.json#L9 https://github.com/bndw/wifi-card/blob/master/package.json#L...
        • playpause 5y ago
          I’m not sure what you think I was asking the previous commenter. This makes no sense as a reply.
          • mikkelam 5y ago
            I thought you were asking the parent how the QR generation worked, if it didn't send something to a server.
        • mekkkkkk 5y ago
          But... that's exactly what it does though?
• maddyboo 5y ago
  If you want some interactivity (bash): read -rp "SSID: " ssid read -rsp "Password: " pass echo -e "\n" qrencode -t utf8 "WIFI:T:WPA;S:$ssid;P:$pass;;" echo "SSID: $ssid" Even better, generate a PDF with emojis and all! #!/usr/bin/env bash out="${1:-wifi-card.pdf}" read -rp "SSID: " ssid read -rsp "Password: " pass echo -e "\nGenerating PDF..." { cat << EOF <table> <tr> <td><img src="data:image/png;base64,$(qrencode -o - -t png "WIFI:T:WPA;S:$ssid;P:$pass;;" | base64)"></td> <td><span>SSID: $ssid</span><br><span>Password: $pass</span></td> </tr> </table> <p> <img width=16 height=16 src="https://raw.githubusercontent.com/iamcal/emoji-data/master/img-apple-64/1f4f8.png"> <img width=16 height=16 src="https://raw.githubusercontent.com/iamcal/emoji-data/master/img-apple-64/1f4f1.png"> Point your phone's camera at the QR Code to connect automatically. </p> EOF } | pandoc --pdf-engine=xelatex -f html -t pdf -o "$out" echo "$out" I used those GitHub URLs for the emojis because pandoc was being weird about the unicode versions.
  • tclancy 5y ago
    Note to anyone blindly cutting and pasting this, the final EOF needs to be alone on the line with no indentation (VSCode did me a disservice and formatted it poorly which confused the hell out of shellcheck but left me learning something today, which was nice).
• alphachloride 5y ago
  Write-Host "?"
• chrisxcross 5y ago
  For users of NetworkManager: nmcli device wifi show-password
  • alias_neo 5y ago
    Wow thanks. I just learned something new. This is now my favourite way to grab the WiFi password.
    • codethief 5y ago
      +1 Why has it never occurred to me that I might be able to use a QR code? I always do `sudo cat /etc/NetworkManager/system-connections/TheSSID.nmconnection | grep psk`, type in my root password and then re-type the passphrase manually on my phone. The amount of time this is going to save me…
      • alias_neo 5y ago
        I was always aware my phone has an option to scan a QR to connect to WiFi, but I never thought to look up the QR spec for it. I had no idea nmcli had this functionality either, though I have used qrencode a lot for TOTP and WireGuard.