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 always disable animations in Windows using sysdm.cpl and yes, it feels faster. I have also reduced animations in my android phone using dev options.
    • Neowin's servers (hosted in the UK).
    • MacOS isn't Linux, but Proton is modified WINE, and WINE runs on MacOS. They would just need to add something like Box86 or Rosetta support.
    • PicPick 7.4.0 by Razvan Serea PicPick is user friendly and full of features for creating your image, suitable for software developers, graphic designers and the home user. It is an all-in-one program that provides a full-featured screen capture tool, intuitive image editor, color picker, color palette, pixel ruler, protractor, crosshair and even whiteboard. It not only has everything that you need, but it loads fast, and sits quietly in the system tray until needed. This software is provided as freeware for personal use only. In this case, you are granted the right to use this program free of charge. Otherwise, you need to pay for a license for commercial use. PicPick key features: For All Windows (Fully support Windows 11, 10, 8.1, 8, 7, Vista and XP both 32-bit and 64-bit) Multi-language is supported. (MORE 28+) All functions are fully supported on a dual screen environment. No Registry, No access to System folder (you can copy these files to portable USB) Screen Capture Auto-scroll, dual monitors and sound effect are supported Various output to File, Printer, Office programs, External program Sharing to FTP, Web, E-mail, Facebook and Twitter are supported as well Full Screen Active Window Window Control Scrolling Window Region, Fixed Region FreeHand Repeat Last Capture Image Editor Intuitive User Interface Windows Ribbon style Standard drawing, shapes, arrows, lines, text, and etc. Blur, sharpen, hue, contrast, brightness, pixelate, rotate, flip, frame effect and etc. Color Picker and Color Palette various color code type (RGB, HTML, C++, Delphi) Photoshop style RGB/HSV conversion is supported. Pick and Save your favorite color! Screen Pixel Ruler Horizontal and vertical orientation various units (Pixels, Inches, Centimeters) DPI setting (72, 96, 120, 300) colorful gradient skins You don't have to install any other screen ruler softwares. Screen Magnifier Zoom 2x to 10x option Stay on top, smooth display, and sizeable window Screen Protractor Have you seen any screen protractor function in other software? Screen Crosshair For aligning objects in graphics or design applications For calculating relative coordinates on screen Some prefer to use this tool than a pixel-ruler. Whiteboard For giving a presentation or just drawing something on screen PicPick 7.4.0 changelog: Added support for saving in WebP file format Added horizontal scrolling in the Image Editor with Shift and mouse wheel Fixed control capture failing to detect specific windows Fixed focus loss during delayed active-window captures. Download: PicPick 7.4.0 | 74.9 MB (Free for personal use only) Download: Portable PicPick 7.4.0 | 73.3 MB View: PicPick Home page | Screenshot Get alerted to all of our Software updates on Twitter at @NeowinSoftware
    • Stellarium 25.2 by Razvan Serea Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It is being used in planetarium projectors. Just set your coordinates and go. Stellarium key features: Realistic simulation of the sky, sunrise and sunset Default catalogue of over 600,000 stars Downloadable additional catalogues for up to 210 million stars Catalog data for all New General Catalogue (NGC) objects Images of almost all Messier objects and the Milky Way Artistic illustrations for all 88 modern constellations More than a dozen different cultures with their constellations Solar and lunar eclipse simulation Photorealistic landscapes (more are available on the website) Scripting support with ECMAScript (a few demo scripts are included) Extendable with plug-ins: 8 plug-ins installed by default, including: artificial satellites plug-in (updated from an on-line TLE database) ocular simulation plug-in (shows how objects look like in a given ocular) Solar System editor plug-in (imports comet and asteroid data from the MPC) telescope control plug-in (Meade LX200 and Celestron NexStar compatible) The major changes of this version: Many changes in support of sky cultures Added 2 new plugins: Mosaic Camera and Custom Nebula Textures Many improvements in Core Updates in sky cultures (include new one) [full release notes] Download: Stellarium 25.2 (64-bit) | 361.0 MB (Open Source) View: Stellarium Home Page | Other Operating Systems | Screenshot Get alerted to all of our Software updates on Twitter at @NeowinSoftware
  • Recent Achievements

    • First Post
      Johnny Mrkvička earned a badge
      First Post
    • Week One Done
      viraltui earned a badge
      Week One Done
    • One Month Later
      serfegyed earned a badge
      One Month Later
    • Dedicated
      firey earned a badge
      Dedicated
    • Dedicated
      fettermanj earned a badge
      Dedicated
  • Popular Contributors

    1. 1
      +primortal
      650
    2. 2
      Michael Scrip
      224
    3. 3
      ATLien_0
      222
    4. 4
      Xenon
      146
    5. 5
      +FloatingFatMan
      143
  • Tell a friend

    Love Neowin? Tell a friend!