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.

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9
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4answers
6k 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
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1answer
52 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 .
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0answers
30 views

Are there any way to Capture video stream using Android camera as scanner?

I know , we can write android code to scan bar-code and QR code using normal android phone camera . I interest to know. can I write to scan video stream using Android camera? (I want to know , extract ...
0
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0answers
711 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
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0answers
226 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
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0answers
237 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
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0answers
154 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 ...
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0answers
1k 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
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0answers
662 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 ...
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0answers
2k views

Whatsapp Web on mobile does not open the QR Code option

My Galaxy S5 is reset and updated. Only with Whatsapp installed and updated and with 13 open conversations only, but do not want to open the WhatsApp Web option to appear the QR Code reader, can ...
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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 ...
3
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2answers
21k 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
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3answers
3k 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
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2answers
1k 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
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1answer
987 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 ...
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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
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7answers
62k 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
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1answer
2k 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
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2answers
67k 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?
11
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3answers
80k 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'...
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2answers
138 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
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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 ...
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2answers
11k 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 ...
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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
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1answer
256 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
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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 ...
0
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2answers
29k 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
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1answer
3k views

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

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
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2answers
6k 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
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0answers
856 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
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1answer
227 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
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2answers
170 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
6k 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 ...
5
votes
1answer
3k 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. Is there an app that does this either specifically for contacts or ...
42
votes
2answers
22k 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 ...
19
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8answers
2k views

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

The title is pretty self explanatory on this one.