Unable to login with QR code

[codebam]

According to the login page I should go to Settings -> Devices -> Scan QR to login using a QR code however the option is not present in the Telegram FOSS app

[r4sas]

That functional dropped with Google Vision support:
a46fb6d

[codebam]

Oh okay, thanks for the response

[trysten]

IMO this is still an issue. Users expect to use QR code login, and it would be nice to have for that reason. I'm not familiar with this project, so forgive me ignorance: Why? Why did you do a46fb6d? There's no explanation in the Changelog, issues, or the commit itself. Why is there no explanation?

Unless this is wont-fix, I think this issue should be reopened.

[Younes-L]

It's explained in the readme

Removal of non-FOSS, untrustworthy or suspicious binaries or source code and their functionality:

• Google Vision face detection and barcode scanning (Passport)

Also why would users expect to use QR code in tg-foss ?
Tg-foss is not the same as telegram app, and this is one of the differences

[zk-pre]

Assuming the QR-code is for logging in, I'd expect a foss replacement like the other features, as there are still maps and push notifications.

[jomo]

I suggest using zxing as a Google Vision replacement, or opening an external barcode scanning app. zxing seems to be included in TG-FOSS already, but apparently not used here?

The login QR codes use a URL of the format tg://login?token=<base64>. They can't be used by opening them as a link though, that just shows a warning (which is a good security measure and shouldn't be changed IMO)

[bingoxo]

please re-open the issue as a solution hasn't been implemented yet

[cooldeboy]

It's explained in the readme

Removal of non-FOSS, untrustworthy or suspicious binaries or source code and their functionality:
• Google Vision face detection and barcode scanning (Passport)

Also why would users expect to use QR code in tg-foss ?
Tg-foss is not the same as telegram app, and this is one of the differences

In socialist country , such as All we know, mobile phone numbers are required to be authenticated with real names and identity, and SMS from Telegram cannot be received, even you use a VPN.

If the QR code feature is disabled, it will cause some problems and security concerns when logging into new devices

[timonoj]

There's PLENTY of FOSS libraries for QR scanning.
https://github.com/markusfisch/BinaryEye
https://github.com/dmitriy-ilchenko/QrAndBarcodeScanner
https://github.com/AndreMiras/QrScan
https://github.com/zxing/zxing
....
The list keeps going. All these are published on F-Droid. How much would it cost to just launch an intent to a QR-reading app? I don't think you'd even need to have full integration for this.

[m-alice]

Telegram Desktop 3.0.1 keeps demand qr code

When i use Barcode Scanner from ZXing 4.7.8, it redirect me to Telegram and i see it

And, my version of Telegram Android 8.0.0 does not have the right menu item

What next?

[Younes-L]

Telegram Desktop 3.0.1 keeps demand qr code

QR code is one of two login options, tdesktop isn't forcing you to use qr code

What next?

click "log in using phone number" at the bottom then proceed @m-alice

[m-alice]

using phone number

Dear friend, i'm still waiting for a code for a whole hour.
I do not say that using SMS login is a security blow.
As a solution, i used a fork, Nekogram X - there is all right with the menu item

[timonoj]

Telegram Desktop 3.0.1 keeps demand qr code

QR code is one of two login options, tdesktop isn't forcing you to use qr code

What next?

click "log in using phone number" at the bottom then proceed @m-alice

Please don't justify the lack of a functionality with different options that the non-FOSS also gets. This is lacking a possibly fundamental option for people that don't want to disclose their phone number in their country. So now they get to choose which kind of privacy they prefer? The closed-code one with possible tracking, or the one that can be dangerous to your own person?
It seems such an easy solution is available, with plenty of alternatives already available. Why isn't it added to the code? Just a lazy intent? Why gimp the functionality?

[gnusuari0]

If someone replaces Telegram's QR library with a libre library, would you merge that change?

[Elinvention]

I felt a bit lost when Telegram Desktop asked me to scan a QR Code and I couldn't find it.

I though I must be stupid that I can't follow basic instructions. I got angry. My stress level increased. That's no good for my health. So here I am asking to add a simple text stating that the functionality is not available in Telegram-FOSS.

[alfianrehanusa]

I felt a bit lost when Telegram Desktop asked me to scan a QR Code and I couldn't find it.

I though I must be stupid that I can't follow basic instructions. I got angry. My stress level increased. That's no good for my health. So here I am asking to add a simple text stating that the functionality is not available in Telegram-FOSS.

Actually I waste my time for searching this, and search in google instead :(

[paucazou]

Same problem with me : no sms, no message sent to telegram app, and QR code doesn't work... I just can't log in the desktop app.

[tangodev]

This is an issue. Why? Because it's making Telegram look unprofessional.

Not a long time ago I was helping someone with Telegram and I was utterly puzzled as to why they didn't see the Scan QR option. I assumed they were running an outdated version.

Fast forward to today and I'm having the same issue. "Is my client outdated? Is there something wrong with my phone?". This was a waste of time. And I also felt dumb "Why can't I find a button that's supposed to be THERE?!".

Less tech savvy users will never figure this out. They don't understand Google services and the Play Store. They deserve to have their privacy respected, but they also deserve feature parity and the same UX.

Therefore, the issue is far from "closed".

[r4sas]

@thermatk, I think we need Bountysource for such situations, where somebody wants something for free when project adressing other problems.

[thermatk]

@r4sas I don't think we need bountysource, as QR codes are literally the only remaining functionality not on par with upstream as of now, considering we recently got back the heavy stuff like x86 builds

Also, the QR login supposedly works in NekoX, so the NekoX patches just need a backport at this point :)
but last time I looked it was a bit scattered across multiple commits

[thermatk]

QR login seems to be a server side switch (qr_login_camera):
https://core.telegram.org/api/config

Flipping the switch here to true makes it work:

Telegram-FOSS/TMessagesProj/src/main/java/org/telegram/ui/SessionsActivity.java

Line 649 in f1ff2b4

boolean hasQr = currentType == 0 && getMessagesController().qrLoginCamera;

that's a surprise 🤨

[r4sas]

I tried that already (but only with commenting out && getMessagesController().qrLoginCamera part), but that didn't make it work on local build...

[Frikster]

That functional dropped with Google Vision support: a46fb6d

If logging in by QR code was dropped then the bug is that the instructions still tell us that using a QR code is an option. There is still a bug. The QR instructions should be removed because they no longer work.

[m-alice]

Seems to be Neko 8.5.1 drop QR support too. NekoX 7.8.0 scans fine.

[thermatk]

set up Bountysource ASAP, because next version will have QR code login 🤣

[tangodev]

set up Bountysource ASAP, because next version will have QR code login rofl

Please specify what you mean. QR only login? Do I understand correctly?

[Frikster]

Please specify what you mean. QR only login? Do I understand correctly?

I think he means set up a Bountysource to remove the QR code instructions and I think he is laughing because of how trivial such a fix should be, yet still a problem

[amlaku]

I have signed in before 1 weeks ago in my desktop but know I can't login by my phone number without qr code
so I can't scan it please help me

[EugeneEliot]

When I turn on the camera to scan the QR code, there is no response. what's the matter?