Questions tagged [qr-code]

Quick Response Codes are 2-dimensional barcodes, which can be used for many things. Data are encoded into a graphical format which then can be read by a camera and evaluated using special apps (barcode readers). Example usages include linking to web pages or exchanging contact data. See the 'info' link for further details.

Filter by
Sorted by
Tagged with
1
vote
0answers
71 views

WhatsApp QR scanner seems blurry

My WhatsApp QR scanner is not working when needed for WhatsApp Web. It seems blurry, while my phone's camera is actually perfectly clear. Secondly, I have restarted the phone none worked, same issue ...
0
votes
0answers
46 views

WhatsApp Web and the QR Code

We connect to the WhatsApp web by scanning the QR code. When scanning like this, WhatsApp is transferring some data between the mobile and the web. So if a data transfer is going on, what will that ...
1
vote
0answers
293 views

Open Wifi QR code on Android 8

I have an old Wileyfox 2x with Android 8.1 on it. When I try to open a 'WiFi QR code', instead of creating a new WiFi connection, the pseudo-URL is just opened in a browser window. Is this even ...
4
votes
1answer
4k views

How do you pair a Device for Wireless Debugging with a QR Code?

There doesn't seem to be much written on this, but I see an option to pair my device with a QR code scanner. Is there a way to pair my phone with my computer by generating a QR code on my computer and ...
2
votes
0answers
92 views

How to create QR contact code from vCard

Just came across a website with a QR code that when I pointed the mobile phone camera towards it (I am using a mobile phone with Android 10), it opened a window with Name, Phone, Email, Website, Title ...
0
votes
2answers
487 views

Cannot scan QR code for WhatsApp web even when mobile data only

I am on the very last version of WhatsApp for Android: it can't no longer connect to WhatsApp Web (it worked fine for ages) I tried all older tricks found in this forum: mobile data only(no wifi), ...
0
votes
0answers
54 views

App to connect camera to gallery image when scanning QR code

Sorry for the not so catchy subject, I don't know how to phrase the question more precisely. My requirement is: I use an app scanning QR codes directly via camera for a specific purpose. Sometimes it ...
0
votes
0answers
886 views

Hide Wifi Password QRCode in latest Android mobiles

We are using Android devices within office network and these devices will be used by operators for daily day-to-day operation activities. Currently, these Android devices are connected to Office Wifi ...
3
votes
1answer
111 views

WhatsApp Built in Scanner Won't Work

I have spent 2 days reading everything on the web concerning this issue and trying all the solutions suggested, with no success. The problem: When I try to connect to to WhatsApp Web, the QR will ...
9
votes
4answers
32k views

How to protect my Wi-Fi password from being displayed by Android phones when sharing it with QR code?

I would like to know if there is any workaround to protect or hide my TP-LINK Wi-Fi router password from being displayed on phones using Xiaomi (Redmi) phones. If we go to Wi-Fi in a Redmi phone and ...
0
votes
1answer
107 views

what versions of android lets you share saved wifi using qr code?

i am trying to list the versions that support sharing saved wifi through qr code .
0
votes
0answers
885 views

“Incorrect code” when scanning QR in Android Messages for web

I've installed Android Messages in Samsung Galaxy S4 mini i9195 and it works fine, except one thing - it keeps complaining with an "Incorrect code" message whenever I try to scan the QR of https://...
0
votes
0answers
1k views

How to generate QR code that connects phone to wifi AND opens website?

I know it's pretty easy to generate a QR code that connects your phone to a wifi or open a website. But I can't find a way to do both with just one QR code. Is this possible? If yes, can someone tell ...
2
votes
0answers
340 views

Scan and recreate QR code

Does anyone know of a way (preferably a single app) that could scan and recreate a QR code? Eg. I point my phone at the code, and then I could display that code on the screen, so it can be scanned ...
0
votes
0answers
186 views

how to open whatsapp with out scanning QR code [duplicate]

i want to open whats app in browser . but i have to scan the QR code produced in the browser through camera. is there any way to get my whats in browser. problem is my camera is not working it is ...
1
vote
0answers
2k views

Reading a QR code from an image instead of a camera

My device does not have a camera, so all those QR code scanners are useless to me. Is there a way to read a QR code from an image, possibly like an app registering itself as a QR code scanner and it (...
0
votes
0answers
801 views

Provide APN settings from outside without Internet (i.e. SMS, QR Code)

I'm looking for a way to provide APN settings to a device that doesn't have an internet connection yet. It is intended to set up hundreds of devices more quickly by a variety of users across the ...
1
vote
1answer
2k views

How can I use web.whatsapp.com on an Android phone with a broken screen?

My Android phone's screen died: no image, no touch, nada. How can I use http://web.whatsapp.com/ without being able to start WhatsApp and browse to the option Menu > Whatsapp Web so I can scan the QR ...
8
votes
0answers
29k views

How to emulate camera input in Android? (To activate Whatsapp Web)

I have an Android device without a camera and I run Whatsapp on that device. I want to activate Whatsapp Web from this device. Unfortunately, the only way to do this is to scan a QR-code, and I can't ...
3
votes
3answers
5k views

How to tweak camera/screen for Whatsapp web QR scanner

This is NOT a duplicate of Why I can't scan the WhatsApp QR? or Can't scan QR code for WhatsApp web due to camera inverted or tilted on Galaxy Y Duos. I'm using CyanogenMod 11 (snapshot M12) ...
2
votes
2answers
2k views

QR Scan in WhatsApp doesn't work (QR loads but phone scan never ends)

Not the same as Why I can't scan the WhatsApp QR? because the problem there was the "OK Got It" was not visible due to the screen being too small, but that's not the problem here I have the ...
0
votes
1answer
1k views

Why I cant scan the the Whatsapp QR code? [duplicate]

I have tryed to scan the QR code using whatsapp for web, also I see the: ok, I got it, then a green line start to scan but noting happened, I just downloaded the app yesterday night and also Im in the ...
-1
votes
1answer
4k views

Half screen in android whatsapp camera while scanning QR code

I have still the same problem, my internet is working perfectly. I use idea 3g network for Xperia U running on Android 4.0.4. I cannot scan the barcode because of whatsapp camera is open in 1/4 of the ...
4
votes
7answers
68k views

Can't scan QR code for WhatsApp web due to camera inverted or tilted on Galaxy Y Duos

First of all, I already read the other posts about problems reading the QR Code, and my problem is different. I have a Galaxy Y Duos, so my screen is bigger than 4 inches. I do get the "Ok, got it" ...
0
votes
1answer
3k views

Any application to scan non-standard QR codes

Following this question. Typical QR Codes have control squares in three of four corners of each code: It there any application or method available for Android system to scan non-standard QR Codes? ...
4
votes
2answers
72k views

QR code is not loading

I tried to connect Whatsapp on chrome. But when I go to https://web.whatsapp.com, QR code doesn't load. Rather it shows a continuously moving circle. What might be the reason for this?
12
votes
3answers
81k views

How to scan QR code for WhatsApp Web?

I'm hoping this question is suited to this forum. WhatsApp have just announced WhatsApp for the desktop browser (https://web.whatsapp.com). One of the steps is to scan a QR code using WhatsApp. I can'...
1
vote
2answers
146 views

What is the easiest-to-explain way to read a QR Code?

What is the easiest way to teach/enable someone else to read a QR Code? Please notice, I'm not asking how to read a QR Code. I know there's a lot of apps to do it. I'm asking what is the easiest way ...
2
votes
2answers
2k views

Settings related to reading QR codes

I wanted to use the Google Authenticator app to set up two factor authentication. However when I click on the button to scan a QR code, it opens up a camera with 'NAB Banking' at the top (my internet ...
1
vote
2answers
13k views

Scanning a QR code into a browser text input?

I have a bit of an edge use-case of QR codes. I would like to be able to scan a QR code via a phones camera and have that value pasted into a browser text input. Is this possible given any current ...
1
vote
2answers
2k views

QR code printer/reader? [closed]

I run a small business repairing computers. Sometimes I have very similar looking computers, and shenanigans ensue if the customer labels fall off or the serial numbers I record become detached from ...
2
votes
1answer
276 views

Is there a way to scan unusual barcodes?

I know there are plenty of apps that can read QR codes and standard barcodes. Does anyone know of a way to scan unusual barcodes, such as ones found on mail trackers or flight tickets, etc? I imagine ...
1
vote
1answer
2k views

Add calendar event from QR-encoded vcard

Is there any way to BOTH decode QR codes for vcard-format calendar events without mangling the dates, AND add them to the calendar (ICS or newer) when recognized? So far, using QR codes generated ...
7
votes
2answers
132k views

Scan Barcode and QR code from the mobile screen itself

How to scan barcodes from the mobile screen itself? Edit on Mar 10, 2020: I am also looking to do the same for QR codes.
0
votes
2answers
34k views

Where can I get the QR code for an app on the Play Store? [duplicate]

Possible Duplicate: What’s the easiest way to create a QR code for a link? I searched the site, and I've searched google with no answer. Posting QR code images on a webpage is convenient, because ...
4
votes
2answers
3k views

Is there a QR code reader with instant sync to PC? [closed]

QR codes are a great idea, but often I find that I would be better off reading the content on my PC instead of my phone. What I really would want is an app that would read a QR code and instantly send ...
7
votes
2answers
7k views

QR scanner that doesn't want to access my contact list

(I am new to Android and to this site, so please bear with me if my question is extremely stupid and if I got the tags all wrong. Feel free to improve, though.) I want an app to scan the occasional ...
1
vote
0answers
878 views

Open Source “My QR code” app to quickly share my contact details?

Especially in Japan/Korea, there are many proprietary apps to quickly share your name+email+phone. Example here. They all work the same way: At first use, enter your name, email, phone: It generates "...
0
votes
1answer
251 views

How can I read large QRs in Android?

I have used the Zxing app here but I cannot read large QRs with it, how can I do that? By Large, I mean that I want read a content with a lot of text (I am able to make them as large as possible by ...
4
votes
2answers
174 views

How to utilize those Market QR codes?

Once in a while I see a description of a program that is to be installed via Android market. It is often accompanied by a two-dimensional barcode looking like a QR code that I guess somehow contains a ...
2
votes
1answer
8k views

Scan QR codes automatically and continuously

I want to put my Android device in a fixed position, and have the device's camera continuously scan for and respond to QR codes. For example, I have a few QR codes. I want to be able to put the first ...
6
votes
2answers
4k views

Can I generate a QR code for a contact?

I'm pretty sure I remember someone showing me a tool they were using to generate QR codes for individual contacts on their Android. How do I generate a QR code for a contact?
43
votes
2answers
28k views

Reading images of QR codes displayed in the browser

I constantly come across websites that reference an Android application, and provide a QR code of the URL to download the application from the marketplace. Those same sites very rarely provide the ...
20
votes
7answers
3k views

What's the easiest way to create a QR code for a link? [closed]

The title is pretty self explanatory on this one.