Questions tagged [qr-code]

QR Code is a 2D barcode that can be easily scanned using the most modern phones equipped with camera.

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Why does Chrome's built-in QR code generator not work in incognito mode?

Does the QR code generator used by Chrome share information with or use information from third parties? If not, then why does it not work in Incognito mode? As far as I am aware, it's not an extension ...
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299 views

"Broken" QR on Whatsapp Desktop [duplicate]

I just got a new Laptop and downloaded Whatsapp, but my phone can't connect to it because for some reason my QR code looks like this: It has like white strips all over it, and generally it's ...
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18 views

Bulk QR codes Generation

Is there a way to create bulk CR codes to pull data from an excel sheet and insert them to email. Ie if I have a list of serial numbers. One serial number per QR code that can be inserted into the ...
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5answers
8k views

WhatsApp web and desktop app displaying broken QR codes

I recently bought a new laptop and when I tried to set up the WhatsApp Desktop app, the QR code won't scan on my phone. The same is the case with WhatsApp Web as well. I tried doing the following ...
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Why WinAuth is said to be "reached to end of its useful life"?

In my sight, WinAuth has been the most widespread and used Windows 2-step OTP code generator. However, it is said (in the top of Github Readme) that : It has reached the end of its useful life... ...
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WhatsApp web on Google Chrome scanning the QR code do nothing, but it is working on Edge or from another Windows user

I've noticed this issue a week ago, I'm unable to scan the QR code for WhatsApp web on Google Chrome tab, it just does nothing. Tried incognito window in Google Chrome but it doesn't show any signs ...
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2answers
790 views

How can I create my own QR codes for free? [closed]

I'm planning to implement a QR code on a poster that I'm designing, and it seems the most common way to do this is to use one of the many online generators out there, but they either don't allow me to ...
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3k views

scan QR codes into bluestacks android apps with PC webcam

This is not an android question. It is a bluestacks question. I do not own a smart phone. For android apps i use bluestacks installed on windows 10 pro. i ordered a smart watch from aliexpress. ...
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1answer
2k views

Can't display a QR code when using Mail Merge in Microsoft Word (DISPLAYBARCODE/MERGEBARCODE)

I want to use the Mail Merge function in Word to generate name badges to a conference. (Office 365, Word as a local desktop app under Windows.) The data is supplied in an Excel file. One of the fields ...
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2answers
7k views

How do you output a QR code to the linux cli terminal for scanning?

I want to be able to output a QR code to the ubuntu cli terminal where I can scan with my phone. I have a configuration file I want to convert to a QR code so I can scan it vs having to transfer it ...
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1answer
2k views

Image Processing a Metal Dot Peen Data Matrix / QR Code

I have a series of metal data matrix codes I'm trying to read, and my scanner has a hell of a time with them. Here's an example of one: I'm interested if there's a way to process this image into ...
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How does a dynamic QR code work?

So there is this QR code that you apparently can always edit even after it has been printed. For example, see this website that offers dynamic QR codes: For example: When you make a QR code for plain ...
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17k views

Is it possible to create a QR code using text?

QR codes I have seen are mostly image files. But can you create QR codes using plain text? For example ASCII and UTF-8 have black boxes as characters. Can I use those together with spaces to create a ...
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9k views

How do I login to Wechat on Windows without QR code?

I have Wechat installed on an iOS device (iPad) and on my Windows 10 PC. The usual way to log in on Windows (the app/program, not the web application) is to scan the QR code that shows up on my screen ...
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1answer
1.3m views

What to do with a QR code from web.whatsapp.com? [closed]

I'm trying to run whatsapp web from the PC web browser. web.whatsapp.com I have no camera to read and process the QR-code generated. Then I used this website to read the image and it gives me the ...
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1answer
1k views

Are QR Codes Really More Easily Read by Computers

This article claims that QR codes are machine-readable labels — computers can understand them much more easily than they can understand text. QR codes are used for everything from tracking products ...
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1answer
1k views

Some kind of "encrypted" QR codes? [closed]

I'm looking of some kind of solution that enables me to print some kind of "encrypted" QR codes, so scanning of it with regular QR-code reader will display non-sense, but scanning with some "special" ...
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1answer
2k views

What type of QR Code is generated by the Bing QR Code Generator [closed]

http://www.bing.com/widget/t/qrcode Type in a number like 12345 - you will get a QR Code shown on the right. Now go to a site like https://www.the-qrcode-generator.com/ Type in 12345 in Free Text ...
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609 views

save data on image that is hard to see by human but recognizable by device with camera

Anyone has any good idea to save data on image that is hard to see by human but recognizable by device with camera? Number on licence plate can be recognized by computer; QR code can be recognized by ...
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1answer
806 views

Easily generating QR codes

What is the easiest way to generate QR codes? When I do a google search, lots of different sites pop up, but usually they have lots of things to fill in, and lots of options to go through. What I want ...
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0answers
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QR Codes Printing, but Not Printing Correctly - Any Ideas?

I am mail merging some QR codes via file paths stored in Excel into a label template in MS Word 2013. I have the whole process with the Ctrl+F9 working properly, but I am stumped on this: On the 30 ...
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563 views

How to read QR-based vCard on Windows & Mac OS, with USB scanner?

I'm generating QR codes that contain vCards, and these can be consumed just fine by smartphones, e.g. with software like RedLaser, etc. For the desktop I have a barcode scanner that can read QR (2D), ...
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4answers
6k views

If I acquire a USB QR/barcode scanner, can I set it to automatically launch a browser upon reading a URL?

I'm considering purchasing a scanner such as the Esky™ Automatic USB (Bi-directional) Barcode Scanner. I've produced some QR codes (containing valid http URLs) which I'd like students at my school to ...
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1answer
224 views

Is it possible to have a portable plotter that can print QR codes on burlap?

This is a hardware question. Is there a class of plotters that are portable and accept sharpies? The use case: I have a burlap sack. It will be taking very specific potsherds from an archaeological ...
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2answers
662 views

QR Code designed for print? [closed]

our company is looking to publish a desk calendar with a QR code. I know how to generate QR's, but do I need it to be a certain "resolution" or whatever if it's going to go through a professional ...
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1answer
735 views

Why google code download page have a QR code? [duplicate]

Possible Duplicate: QR Codes for Files on Google Code When I open a google code download page, there is a QR code at the bottom. What kind of devices will read this human unreadable QR code? I ...
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1answer
618 views

Can I have a QR code that will create a contact on the device? [closed]

Is it possible to create a QR code, that when scanned, will create a contact on the device? I tried NeoReader - it only scans the data (string value) I can print my Blackberry data, and that will ...
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2answers
725 views

Member access management with ID cards

A customer of mine has a around 100 members in his club and new ones join and members leave every week. So he has no way of knowing everybody personally. He asked me to make him some magnetic swipe ...
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5answers
346 views

Using and creating QR codes

Let's say I came across a QR code (in some webpage or PDF file). How can I use it? How do you use (and create) these QR codes?
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0answers
648 views

Pre-installed barcode/qr readers on mobile devices [closed]

There's an idea within my company to put QR codes in some of our marketing literature, and I'm trying to find some stats (or specific device info) to help me make the decision. My feeling is that, of ...
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2answers
3k views

Why it is hard to read QR code displayed on CRT screen?

I created some QR code just for fun, then tried to read them with my phone. When I display them on laptops, my phone read them just fine. But when I tried to read the exact same codes displayed on CRT ...
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2answers
1k views

Text on QR barcode?

How do you get text inside of QR codes? I know i seen this more then once but here is an image from the latest example. UCM are the initials of that company.
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1answer
7k views

QR Codes for Files on Google Code

When you download files from Google Code now (example), in addition to the text version of the SHA1 hash, it includes a QR code of it. The device that the file was downloaded to is the one that has ...
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4answers
3k views

2D barcode scanner for OS X?

What is the best QR bar code scanner for OS X?