Questions tagged [qr-code]

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

Filter by
Sorted by
Tagged with
0 votes
0 answers
10 views

How can I import a VCARD file (contact information) via a QR code into Android contacts? [migrated]

I would like to generate a QR code for my contact information to put on a website or my phone to show people. They should be able to scan it and import it automatically to their phone contacts. All I ...
VPNer's user avatar
  • 1
0 votes
1 answer
78 views

Is there a way to convert a CA certificate to a QR code?

Is there a way to convert a CA certificate to a QR code so that it can be downloaded and installed with a phone? We want the QR code to install the certificate on the phone so that users can join the ...
Mirving's user avatar
1 vote
1 answer
499 views

Same URL, different QR code - which is better?

I have used a few different online QR code generator sites to create static QR codes (I never do dynamic - I don't need any of their "features" and I don't want them tracking my visitors). ...
OsakaWebbie's user avatar
3 votes
1 answer
6k views

WiFi QR Code format for WPA2/WPA3

I'm creating a new QR code for my WiFi guest network and with my new router it supports WPA2/WPA3 Personal (AES). I've tried multiple iterations of the auto-configuration format (which I can't find ...
Fëanorson's user avatar
0 votes
3 answers
138 views

Generate QR from file

Is it possible to generate an entire file from a QR code? I don't mean the file text contents, but the entire file, be able to reproduce it scanning the QR. If I could generate the QR with a command ...
Smeterlink's user avatar
0 votes
0 answers
508 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 ...
Shahar's user avatar
  • 1
0 votes
0 answers
27 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 ...
Nick Trader's user avatar
5 votes
5 answers
32k 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 ...
Vedant Shah's user avatar
1 vote
0 answers
540 views

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 ...
Infidel's user avatar
  • 11
2 votes
2 answers
2k 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 ...
Hashim Aziz's user avatar
  • 12.3k
1 vote
0 answers
4k 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. ...
Elisha Habinsky's user avatar
1 vote
1 answer
3k 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 ...
UglySwede's user avatar
  • 111
26 votes
3 answers
22k 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 ...
Patoshi パトシ's user avatar
0 votes
1 answer
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 ...
Jeff's user avatar
  • 247
23 votes
3 answers
11k views

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 ...
MCK's user avatar
  • 1,155
129 votes
2 answers
25k 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 ...
MCK's user avatar
  • 1,155
2 votes
2 answers
10k 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 ...
user419144's user avatar
-1 votes
1 answer
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 ...
Azevedo's user avatar
  • 528
-2 votes
1 answer
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 ...
Dudemanword's user avatar
1 vote
1 answer
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" ...
Leotsarev's user avatar
  • 121
2 votes
1 answer
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 ...
user93353's user avatar
  • 561
2 votes
0 answers
613 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 ...
Fangji Zhang's user avatar
2 votes
1 answer
848 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 ...
joeytje50's user avatar
  • 278
1 vote
0 answers
2k views

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 ...
Programming_Learner_DK's user avatar
0 votes
0 answers
623 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), ...
user967722's user avatar
4 votes
4 answers
7k 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 ...
turbonerd's user avatar
  • 153
0 votes
1 answer
260 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 ...
Brian Ballsun-Stanton's user avatar
2 votes
2 answers
802 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 ...
ewitkows's user avatar
  • 123
0 votes
1 answer
737 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 ...
kev's user avatar
  • 12.6k
2 votes
1 answer
628 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 ...
Saariko's user avatar
  • 837
0 votes
2 answers
734 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 ...
Martin Ueding's user avatar
2 votes
5 answers
379 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?
DrStrangeLove's user avatar
3 votes
0 answers
651 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 ...
adam's user avatar
  • 153
4 votes
2 answers
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 ...
Martheen's user avatar
  • 1,513
3 votes
2 answers
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.
user avatar
3 votes
1 answer
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 ...
Synetech's user avatar
  • 68.6k
2 votes
4 answers
3k views

2D barcode scanner for OS X?

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