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.
49
questions
0
votes
0
answers
27
views
Connection fails when receiving photos from Nintendo Switch
I am attempting to wirelessly send screenshots from my Nintendo Switch to my Asus Zenfone 8. However, when I try to scan the QR code to connect to my phone to my Switch I get a "Connection Failed&...
- 151
1
vote
1
answer
656
views
Create a QR code that connects device to wifi SSID & opens a URL?
Many questions regarding QR are from years ago. My question is, will a single QR handle 2 functions.
What I'm trying to achieve is. A QR which allows user to connect to my Wi-Fi (Hotspot) AND open a ...
- 11
2
votes
0
answers
29
views
How can I scan participants' QR tickets to enter an event?
I am hosting an event where I would like to have all participants receive a secret key in the form of a SHA-hashed secret, converted to a QR code. This would represent their ticket to enter the event. ...
- 143
0
votes
0
answers
124
views
How to create a QR code that open a local excel file saved in android phone without internet access?
I have some excel file in my android phone that each one is related to a device. I want to create a QR code (linked to directory of excel file) for every device, when I scan this barcode by my phone, ...
- 1
0
votes
0
answers
52
views
write on android camera buffer
I'm trying to set and image/video as the visualization of android camera, i'm using goldfish/ranchu emulated camera, i found out that is possible to write to gbm on camera/fake-pipeline2, since i'm ...
1
vote
0
answers
218
views
Debug the full output of QR code reader?
In my Android device, I use app "A" to scan a static QR code and the app will show the result.
If I use a regular QR code reader app, the QR code will show as: "checkin:XXXstaticID"...
- 11
3
votes
1
answer
883
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 ...
- 31
0
votes
0
answers
309
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
2
votes
1
answer
2k
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 ...
- 140
17
votes
3
answers
27k
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 ...
- 281
2
votes
0
answers
1k
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 ...
- 216
0
votes
3
answers
923
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), ...
- 101
0
votes
0
answers
104
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 ...
- 101
3
votes
1
answer
175
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 ...
- 41
12
votes
4
answers
59k
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 ...
- 283
0
votes
1
answer
300
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 .
- 219
0
votes
0
answers
903
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://...
- 245
1
vote
0
answers
4k
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
0
answers
458
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 ...
- 121
0
votes
0
answers
195
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
0
answers
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 (...
- 143
0
votes
0
answers
1k
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 ...
- 101
1
vote
1
answer
3k
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 ...
- 61
9
votes
0
answers
31k
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 ...
- 1,161
4
votes
3
answers
6k
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) ...
- 81
2
votes
2
answers
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 ...
- 21
0
votes
1
answer
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
1
answer
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
7
answers
69k
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
1
answer
4k
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? ...
- 2,214
4
votes
2
answers
73k
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?
- 41
12
votes
3
answers
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'...
- 291
1
vote
2
answers
179
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 ...
- 113
2
votes
2
answers
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 ...
- 785
1
vote
2
answers
15k
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 ...
- 111
1
vote
2
answers
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 ...
- 11
2
votes
1
answer
312
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 ...
- 5,387
1
vote
1
answer
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 ...
- 448
8
votes
2
answers
175k
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.
- 359
0
votes
2
answers
42k
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 ...
- 697
4
votes
2
answers
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 ...
- 241
7
votes
2
answers
7k
views
Why do QR scanner apps want to access my contact list?
I want an app to scan the occasional QR code which usually should contain an URL.
The other day, I meant to download an app for that and searched the market for one that does not want access to all my ...
- 262
1
vote
0
answers
931
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 "...
- 5,156
0
votes
1
answer
279
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 ...
user11557
4
votes
2
answers
184
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 ...
- 1,198
2
votes
1
answer
9k
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 ...
- 121
6
votes
2
answers
5k
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?
- 3,423
43
votes
2
answers
29k
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 ...
- 541
20
votes
7
answers
5k
views
What's the easiest way to create a QR code for a link? [closed]
The title is pretty self explanatory on this one.
- 19.3k