Dynamic QR code


Recommended Posts

  On 04/05/2019 at 15:55, Deep_Level_Shark said:

Can anyone please help me to understand Dynamic QR code concept.

 

It is said that in Dynamic QR code , content changes......Does that mean the QR image that I see on screen is also changes ?  or  that QR image remains fixed but content changes ?

 

Expand  

 Not familiar with it but if the content changes, so does the image. The only way around that would be linking to a webpage and *that* content changes. 

I'm not entirely sure what you're referring to, but I can tell you that when using Google Authenticator and trying to pair it using MobileID the QR code changes every so often (every minute, perhaps).

 

So my answer would be that the QR code changes, not the content.

  On 04/05/2019 at 16:34, Nick H. said:

I'm not entirely sure what you're referring to, but I can tell you that when using Google Authenticator and trying to pair it using MobileID the QR code changes every so often (every minute, perhaps).

 

So my answer would be that the QR code changes, not the content.

Expand  

The content changes too. The content is used to form the image. 

  On 04/05/2019 at 16:35, adrynalyne said:

The content changes too. The content is used to form the image. 

Expand  

Fair enough. As I said, I wasn't entirely sure about the question being asked. What would "content" be? The content of the QR code? I would have thought that was static?

  On 04/05/2019 at 16:44, Nick H. said:

Fair enough. As I said, I wasn't entirely sure about the question being asked. What would "content" be? The content of the QR code? I would have thought that was static?

Expand  

Yeah that’s what I figured too. Unless it links to a webpage with the same url and it’s content changes. I would think it needs to be to do that. 

I'm guessing its a QR code that links to a redirector that can change where it redirects?

So the image never changes, it points to the same place, but that's just an intermediary step that forwards the client to the end result.  The intermediary step is what can be changed.

 

https://blog.qrstuff.com/2012/08/12/dynamic-qr-codes

Turns out, I'm basically correct.

  On 04/05/2019 at 17:10, Human.Online said:

I'm guessing its a QR code that links to a redirector that can change where it redirects?

So the image never changes, it points to the same place, but that's just an intermediary step that forwards the client to the end result.  The intermediary step is what can be changed.

 

https://blog.qrstuff.com/2012/08/12/dynamic-qr-codes

Turns out, I'm basically correct.

Expand  

Okay.  image never changes then....fine. 

 

so when you use a scanner to read this QR code , your scanner device will show you same content every time ?  yes/no ?

 

( scanner device cant redirect)

 

I'm still confused.

Edited by Deep_Level_Shark
  On 04/05/2019 at 17:49, Deep_Level_Shark said:

Okay.  image never changes then....fine. 

 

so when you use a scanner to read this QR code , what your scanner device will show to you ? Does it show  a URL as content from this QR code ?

 

I'm still confused.

Expand  

It shows a url that redirects to whatever. QR codes only show what they are encoded to show. They cannot show anything else without changing the image. You can change where the url goes to though. 

 

Example. I have a redirect called foo.com. I make a QR code. It points to foo.com. Foo.com this week redirects to google.com. Next week, I’ll change it to redirect to bing.com. Foo.com didn’t change, so the image didn’t change. 

  • Like 1
  On 04/05/2019 at 17:49, Deep_Level_Shark said:

Okay.  image never changes then....fine. 

 

so when you use a scanner to read this QR code , what your scanner device will show to you ? Does it show  a URL as content from this QR code ?

 

I'm still confused.

Expand  

The URL that's in the QR Code is the same.  But it links to a redirector that can be changed. 

qrcode -> qr.redirect.com/[yourid] -> [your site]

ie:
qrcode -> qr.redirect.com/123 -> neowin.net
qrcode -> qr.redirect.com/123 -> neowin.com

 

So the QR code ALWAYS goes to qr.redirect.com/123 but you change where qr.redirect.com/123 goes to.

  On 04/05/2019 at 17:49, Deep_Level_Shark said:

Okay.  image never changes then....fine. 

 

so when you use a scanner to read this QR code , your scanner device will show you same content every time ?  yes/no ?

 

( scanner device cant redirect)

 

I'm still confused.

Expand  

The QR code image never changes.

The QR code content never changes - it always links the client to a url, the same url every single time.

 

BUT

 

That URL is just a forwarder.  Like a url shortener it then sends the user on the the page that it is "CURRENTLY" meant to.

 

 

  On 04/05/2019 at 18:28, exotoxic said:

My bus "e-ticket" uses an animated QR code which changes every 2 - 3 seconds the scanner is faster than the changes so i am not sure what purpose it actually has.

Expand  

An extra level of authentication.  You can't take a sreenshot and send to your mate.

  On 04/05/2019 at 18:00, adrynalyne said:

It shows a url that redirects to whatever. QR codes only show what they are encoded to show. They cannot show anything else without changing the image. You can change where the url goes to though. 

 

Example. I have a redirect called foo.com. I make a QR code. It points to foo.com. Foo.com this week redirects to google.com. Next week, I’ll change it to redirect to bing.com. Foo.com didn’t change, so the image didn’t change. 

Expand  

How it redirects ? 

 

Is it like this ?

a  person scans first with his scanner device and he found out that  it is  foo.com after scan ....he then opens chrome browser and typed foo.com and hit enter.

 

 

 

  On 05/05/2019 at 02:39, Deep_Level_Shark said:

How it redirects ? 

 

Is it like this ?

a  person scans first with his scanner device and he found out that  it is  foo.com after scan ....he then opens chrome browser and typed foo.com and hit enter.

 

 

 

Expand  

Pretty much. Then foo.com goes wherever it is set to. 

  On 05/05/2019 at 03:52, adrynalyne said:

Pretty much. Then foo.com goes wherever it is set to. 

Expand  

 

what you are trying to say here , in simple words , is

 

if your content is a Link  then its a Dynamic QR Code.

if your content is Not a  Link ( but text only)  then its a Static QR Code.

 

Is it really the difference between Dynamic QR Code and Static QR Code ?

 

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • I have tried that registry 'trick' from that video already. It doesn't work at all in Win11 for me   Yes it's a 3rd party app... that I am only using because of Microsoft breaking user customization in Windows 11. So yes... the is a Windows 11 issue. As of now to me, Microsoft has made a huge mistake with this in Windows 11.   The current font option in Windows 11 are terrible. They are just missing. People that want to use their own computer the way they want to, they need to avoid 11.
    • It's been an age since I did desktop support, but here goes: You have an issue with Windows 11, which is fair.  You are using a freeware 3rd party app to make modifications to the default Windows 11.  Since an update, this 3rd party application no longer plays nice with Windows 11.  And this is somehow Windows 11's fault? Sorry, not buying that this is a Windows 11 problem... it's a customization issue that has just appeared, but standard 3rd party support.   Clearly you're upset.  You can't make Windows do anything, just like you can't make MacOS run Explorer or Linux run Nintendo games natively.  And I know people are going to say "sure, it's possible..." but those aren't defining elements of the OS.  You can't have animated backgrounds in Windows 11 natively -- so it's trash amirite??? I did quick searches about changing the default fonts and there are ways to do it, and clearly 3rd party freeware apps can do it (basically my guess is they're making registry changes on your behalf) and clearly they're having issue.   You can make your computer do a lot of things, but sometimes you get what you pay for. Did a quick search and don't see an easy option in Windows 10 either.  Some of these links - ironically - are for Windows 10.  They still apply. Here's a video tutorial of how it can be done without a 3rd party:   Same reference here with a bit more detail: https://www.howtogeek.com/716407/how-to-change-the-default-system-font-on-windows-10/ Once the font is chosen, the size can be changed via personalization from my understanding. Hope this helps.
    • Videomass 5.0.26 by Razvan Serea Videomass is not just a common converter, it features file concatenation, time trimmer, ability to create thumbnails, tiled mosaics and animated giffs from movies; it has sophisticated GUIs for video filters, previews for video stabilization, resizing, croping, transposing, color equalization. It features PEAK, RMS and EBU audio normalization with streams indexing capabilities, a volume analyzer, audio preview and many more interesting features… For the people that are familiar with FFmpeg, it has a highly customizable preset manager with the possibility to easily make your own presets through the GUI and adapt this to your specific needs or create new presets using the FFmpeg command line. For less experienced people there are also ready-to-use presets. It offers out-of-the-box all possible file formats like MP4, M4V, M4A, MKV, AVI, OGV, WEBM, MP3, AC-3, WAV, OPUS, FLAC, OGG and encoders like MPEG-4, H.264/AVC, H.265/HEVC, VP8, VP9, LIBAOM-AVI, VORBIS, PCM, LAME, ALAC, etc. Also you can copy audio or video streams (lossless mode) without re-encoding, or extract audio from videos and much more! Main features No ads Multi-Platform, work on Linux, MacOs, Windows, FreeBsd. Batch processing. Queue management (only available for Presets Manager and A/V Conversions). Advanced log file management. Multi-panels, switch between panels using keyboard shortcuts. Audio/video processing using advanced tools and sophisticated filters interfaces. While downloading audio or video you can now do other transcoding tasks. Multi languages support (English, French, Italian, Russian, Dutch, Portuguese-BR, simplified Chinese, Spanish-ES, Spanish-CU, Spanish-MX) Conversions and transcoding Drag and drop to add multiple files simultaneously. Fully customizable presets and profiles. Possibility to create your new presets and profiles from scratch. Has useful presets to start with. Using the Presets Manager, you can set any format and codec supported by your FFmpeg build. Media file info (from FFprobe) and streams analyzer (from volumedetect). Shows the estimated time of arrival during encodings. Concatenate, merge media files losslessly. Create Slideshows. Extract images from video. Ability to switch between different FFmpeg builds. Has useful graphical tools for evaluating the supported features of a specific FFmpeg build. Audio stream mapping using selectable indexes. You can set both audio and video to copy when you just want to convert formats (lossless process). Timeline editor to slice time segments or trim the duration of your media even without re-encoding and therefore without loss of quality. It has GUI video filters such as: Resize Crop Transpose Deinterlace Denoise Stabilize Equalize Audio filters for volume normalization such us: PEAK, RMS and EBU-R128 normalizers. PEAK and RMS volume analysis reporting. Ability to select specified audio streams in videos to apply volume normalization. and much more… Videomass 5.0.26 changelog: Fixed yt-dlp preferences tab issue #372 Enabled import of the external «yt_dlp» package also on the standalone executable built by Pyinstaller. Improved handling of the yt-dlp executable (yt-dlp.exe on Windows) which now provides some automation and useful information for the users. Added «Whale» browser to the supported browser list for cookie automations. Update it_IT i18n, thanks to @bovirus Update zh_CN i18n, thanks to @userwljs Removed API functionality for download operations. Now only the yt-dlp executable is used for download operations. The API is still needed and will only be used for statistics extraction and format code listing. Fixed #374 Added «FLAC resampler» new preset. Notes: FFmpeg is not included in this archive. Before launching the application, ensure you have a compatible version of FFmpeg for your system architecture (requires ffmpeg.exe, ffprobe.exe, and ffplay.exe, version 5.1 or newer). For more details and downloads, visit: Gyan's FFmpeg builds page BtbN's FFmpeg GitHub releases page Antivirus False Positive Detection Some antivirus programs may mistakenly flag Videomass.exe as malicious. These are false positives. To resolve this, submit the Videomass.exe file to your antivirus vendor for further analysis and request a false positive review. Download: Videomass 5.0.26 | 18.4 MB (Open Source) Links: Videomass Home Page | Screenshots | Other OSes Get alerted to all of our Software updates on Twitter at @NeowinSoftware
  • Recent Achievements

    • Week One Done
      abortretryfail earned a badge
      Week One Done
    • First Post
      Mr bot earned a badge
      First Post
    • First Post
      Bkl211 earned a badge
      First Post
    • One Year In
      Mido gaber earned a badge
      One Year In
    • One Year In
      Vladimir Migunov earned a badge
      One Year In
  • Popular Contributors

    1. 1
      +primortal
      489
    2. 2
      +FloatingFatMan
      261
    3. 3
      snowy owl
      244
    4. 4
      ATLien_0
      222
    5. 5
      Edouard
      189
  • Tell a friend

    Love Neowin? Tell a friend!