Published by Cognex Corporation on Nov 22, 2023

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Why should I report an Issue with Barcode Scanner?

  1. AppContacter will directly Email your issue/feedback to an apps's customer service once you report an issue and with lots of issues reported, companies will definitely listen to you.
  2. Pulling issues faced by users like you is a good way to draw attention of Cognex Corporation to your problem using the strength of crowds.
  3. Importantly, customers can learn from other customers in case the issue is a common problem that has been solved before.
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About Barcode Scanner

1. The Cognex Mobile Barcode SDK supports all major barcode symbologies, including Aztec Code, Codabar, Code 11, Code 25 (Interleaved, Industrial and ITF-14), Code 39, Code 93, Code 128, Data Matrix, DotCode, EAN, ISBN, GS1 DataBar, MaxiCode, MSI Plessey, PDF417, Postal Code, QR Code (Micro and Standard), TELEPEN and UPC barcode types, as well as all GS1 sub-types like GS1 QR Code, GS1 DataMatrix and GS1-128.

2. Download the Cognex Barcode Scanner application for your mobile device to see how the Cognex Mobile Barcode SDK can add new interactivity to your apps and enable a host of marketing, industry, and enterprise automatic identification and data capture (AIDC) workflows.

3. Reliability - The Cognex Mobile Barcode SDK is the most reliable and accurate barcode reading technology available for mobile applications and smartphone integration, regardless of platform, development framework, or barcode symbology.

4. Quickly scan driver’s licenses and disks; deliver accurate results to consumers scanning products; make connections at trade shows; scan airline and train boarding passes; expedite package and food delivery; keep the warehouse organized all with the same powerful barcode scanning technology used by many of today’s Fortune 500 companies.

5. The Cognex Mobile Barcode SDK for Web leverages the power of your browser’s Web Assembly capabilities to bring world class barcode scanning to mobile and desktop browsers alike.

6. The Cognex Mobile Barcode SDK is available for the most powerful cross-platform development frameworks, including: Xamarin, Cordova, Flutter, React Native, and NativeScript.

7. You can add powerful data capture parser plugins to the Cognex Mobile Barcode SDK at no additional cost when you purchase an SDK license.

8. Or deploy a barcode scanning Progressive Web App (PWA) using the Cognex Mobile Barcode SDK for Web.

9. Speed - The Cognex Mobile Barcode SDK is tuned to provide fast and reliable barcode reading for smartphones and tablets.

10. add the power of the Cognex Mobile Barcode SDK to your development toolkit today!

11. Simplicity - The SDK’s high-level API make adding barcode scanning to your application simple.

Barcode Scanner Customer Insights

1. I understand that this is just a demo preview their technology and but it's great, it scans barcodes on the way to scan barcodes! I have a dream and in that dream all phone apps that need barcode scanning will have this technology integrated.This is an excellent app with a lot of configurations for more advanced uses.

2. The only option I wish was in the app would be the ability for it to show hidden characters such as start/stop characters, group separators, etc.BEST SCANNER EVER!!!!! Really, the absolute best scanner that has ever existed on the planet! It scans anything and everything (like the really hard databar GS1 codes), it can automatically copy to the clipboard or execute a search (my cell clipboard syncs to my windows 11 clipboard, so this is perfect), and it is crazy fast.

3. The app and the decoder engine are fully customisable - you can use it even with very exotic formats of the picture codes, as well as for reading very damaged codes.A no-nonsense scanner that does a GREAT job at what I want...scanning barcodes.

4. The pop-up tips get a little annoying after a while, I hit "Do not show again", but it doesn't seem to work.It's an amazing application for scan barcode and qr code as well.

5. I've been using other scanners (handheld and android-app based, and I always find something that does not work or a barcode that won't scan.

6. Theres more settings allowing user optimal scanning flexibilityWOW!!! I'm a consumer and my experience with using my phones overy the years for scanning bar and QR codes can be sumed up as MEH.

7. I scan something and I have read the tips but so much transparency in all apps, social media etc that you can't truly understand or trust the companies these days.

8. Continuous can let you keep scanning, but I don't need the massive scrolling list, only the most recent.GET THIS NOW!! I've tried loads of bar and qr code scanners and this one is far and away the best.

9. It picks up and captures codes so frikkin fast... Sometimes with only half the length of the barcode bars in frame.

10. I never seen this type of application yet.Very useful app - It can read both: 2D and 1D codes.

11. Cognex has always been my company's preferred hardware provider for scanning, and their software is living up to their name as well.

Steps to Troubleshoot & Fix Barcode Scanner Issues

1. Fix Barcode Scanner Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart Barcode Scanner: Restarting the app will resolve most errors.
  2. Update the Barcode Scanner App. Here is how:
    1. On Android goto PlayStore » Search for "Barcode Scanner" » Open Barcode Scanner » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for Barcode Scanner » click "UPDATE".
  3. Clear Barcode Scanner app cache: Clearing cached data will force your app to retrieve the latest data directly from Barcode Scanner servers.
    1. On Android, goto Settings » Apps » Select "Barcode Scanner" » click Storage » click "Clear Cache".
  4. Check Barcode Scanner app permissions. If any of these permissions required to use your device's features are disenabled, Barcode Scanner might not work.
  5. Uninstall and reinstall Barcode Scanner. If nothing else has worked, completely uninstall Barcode Scanner then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing Barcode Scanner not working


2. Fix Barcode Scanner Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make Barcode Scanner be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to Barcode Scanner not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, Barcode Scanner may not be able to connect to the Internet when running in the background.

Reported Issues