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Encoding your WiFi access point password into a QR code

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Re: Encoding your WiFi access point password into a QR code

#111
post #99
post #63

Earlier quoted context omitted.

Yes, let’s give all passwords for wifi networks to the company that notoriously maps all wifi networks they can find. What could possibly go wrong...?

This happens every time I use android to connect to a WiFi network. Google stores my info in clear text to them.

Thanks for the warning, I had no idea. Note to self: always give temporary guest passwords to Android users.

Re: Encoding your WiFi access point password into a QR code

#112

A secure random WiFi password in a QR code is great for Android and iOS, and the laptops/desktops that can sync their password database with them over Bluetooth. But what about all those other random WiFi devices? I don’t relish the thought of entering 63 characters into my printer’s goofy interface, a games console, my car, etc...

Your car connects to WiFi? Oh boy, the security implications...

Every tesla car has a sim card and data connection that is used to connect to a vpn that high enough level engineers can use to run ssh commands directly on every tesla car at once or even target certain ones.

You know nothing john snow.

Re: Encoding your WiFi access point password into a QR code

#113

I do this in our house and it works great. I discovered one flaw though. When I say scan the QRCode I am immediately told “i don’t knows how” Or asked “the what?” Or disapproved of with “I hate those things.” Fun fact no one has ever actually scanned the code... ever! Maybe if I was a cafe but not for house guests.

If nobody will use it, does it really work great?

Re: Encoding your WiFi access point password into a QR code

#115
Another great barcoding library is BWIP-JS at https://github.com/metafloor/bwip-js/

You can immediately generate QR codes from it using this link: http://bwip-js.metafloor.com/demo/demo.html

I use BWIP-JS in my electron app. Love it. Super easy and reliable way to print barcodes on a label printer using nice UI: https://label.live

Re: Encoding your WiFi access point password into a QR code

#116
post #90

Earlier quoted context omitted.

I think it is a joke-attempt at getting him to reveal his wifi password :)

I have hereby been whooshed, though in my defense I have a guest-only, throttled and isolated wifi network so the potential for misuse didn't occur to me.

I have exactly the same. I don't want the entire world to use it though, as it still uses my broadband connection, which contains my external IPv4 address. I guess I should tunnel it over a VPN instead.

Re: Encoding your WiFi access point password into a QR code

#117
post #69

Earlier quoted context omitted.

They can’t be used to encode very much data though. They wouldn’t be suitable for storing documents, but could be used to store the location of a document. I was trying to be clever once and thought I could encode X.509 certificates in QR codes. Even that much data was pushing the hard limits of what they can store, and became very hard to scan (I quickly realised this wasn’t actually very clever).

i think datamatrix is more suitable for x509

Yes.. I had made a form that was scanned and all the metadata for the page was stored in datamatrix at the bottom.. With a laser printer and a good scanner you can reliably put a lot of data in there...

Re: Encoding your WiFi access point password into a QR code

#118

Most ISP put this kind of QR code on the provided "modem" in France with the default Wifi password of the device. I love QR code. I think it should be everywhere. All legal documents and forms should have one. All supermarket bills should have one. It's a fantastic way to transition from paper to bits. Unfortunately most users have no idea what it is. They don't know what a URL is, so a QR code is out of the question…

They teach kindergarten's to use QR code where I live.

Re: Encoding your WiFi access point password into a QR code

#119
post #60

This is interesting, however my main problem with really long Wi-Fi password are devices that have bad ways to input text. Things like media box using a remote controller or a video game console using it's controller. WPS was born to fix this, however the specification is so broken that it is literally useless from a secure standpoint.

Also, there's no need for 63 character passwords. You can get ~128 bits of entropy with around 22 alphanumeric characters.

Re: Encoding your WiFi access point password into a QR code

#120

I do this in our house and it works great. I discovered one flaw though. When I say scan the QRCode I am immediately told “i don’t knows how” Or asked “the what?” Or disapproved of with “I hate those things.” Fun fact no one has ever actually scanned the code... ever! Maybe if I was a cafe but not for house guests.

If nobody will use it, does it really work great?

Solutions that work technically but lack adoption is the default state of software engineering!
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