Code39 | Generate CODE39 barcodes in PHP | Web Framework library

I am trying to render Multiple Barcodes with same ID in one HTML Page. Here is my code below.

This is the barcode scanning tutorial I used in my program, so that you have a lot more context when you read my code: Link

Here is what my program does so far: Essentially, when I scan an item's barcode with my phone, the UIAlert pops up with the barcode ID displayed and a button prompting the user to open the "Results" page. This is all fine and good, but how do I pass that same scanned barcode ID into a label on the Result's page? I have been stuck on this for 2 days now, even though it seems like such an easy task.

Any help is much appreciated <3

Here is my relevant code:

ProductCatalog.plist -> Link to Image

Scanner_ViewController.swift (first View Controller) ->

I have a task of developing python script to print labels using the networked Zebra ZT410.

So far, I can print Chinese Characters correctly using "Zebra Setup Utilities" with ZPL commands:

I have created an application which generates the Barcode.

Here is the code how I created the Barcode:

In books (e.g. "Barcodes for Mobile Devices", ISBN 978-0-521-88839-4), Papers (e.g. "Bar Codes May Have Poorer Error Rates Than Commonly Believed", DOI: 10.1373/clinchem.2010.153288) or websites information about the accuracy or error rates of barcodes are given.

The given numbers vary for e.g. Code39 from 1 error in 1.7 million, over 1 error in 3 million to 1 error in 4.5 million.

Where do these numbers come from and how can one calculate it (e.g. for Code39)?

In the definition of Code39 in ISO/IEC 16388:2007 I also couldn't find usefull information.

I have an ASP.NET 4.5 /C# web application that uses a Crystal Report and displays it on a web page via the Crystal Report Viewer. I also have an export button that allows the report to be exported to a PDF file. The report contains a Code39 barcode font.

When I view my page locally, I can see the report and barcode both onscreen and when I export the report to a PDF file. When I view my report via the web server, the onscreen version works and I can see the barcode. However, when I export the report from the web server, the bar code doesn't display in the PDF file.

The barcode font is installed on the web server, and it looks perfect when I view the report in the browser. I've assigned the font's permissions to all users. The font embeddability is set to "Print and Preview". Does anyone have any idea what I'm missing? Thanks in advance!

I am new to Swift/iOS development and am working on Converting a Swift 3.0 project to Swift 4.2 in order to support newer devices.

In the process I am getting the following error :

Cannot assign value of type '[String]' to type '[AVMetadataObject.ObjectType]?'

Below are the lines of code throwing the error:

This example prompts for barcode scan, and then places the value into "scan-input" box. This works great for ONE input/ONE button.

My issue is i want to be able to add multiple inputs/buttons, and have the scan then place the value in the corresponding input text box.

Current Behaviour

I'm using react-native-camera with iPads/iPhones and I use the front-facing camera to scan barcodes (Code39, Code128, QR, etc..) However when using the front-facing camera, it does not focus on the barcode or anything I put mildly close to the camera. The rear camera works absolutely perfectly however the front camera does not.

I have not been able to test android as I'm not building for android purely just iOS. I can't seem to find any information on getting the front camera to focus.

If I was to stand in the background, hold up my Code39 close to the camera but leave a small gap at the bottom, it would not try focus on the card however stay focused on me in the background.

I've also raised an issue here on their GitHub page, but came here to see if anyone has ran in to this before, has a work around etc.

Expected Behaviour

I expect the camera to see the code is taking up a lot more of the screen than I am, focus on it, read the code and proceed to run the code onBarCodeRead

What have I tried to fix it?

• Disable the autoFocus as this was a fix for Android, no luck here.
• Manually set the focusDepth.
• Manually set autoFocusPointOfInterest to center of screen.
• Change the zoom to 0.2 and slowly increase to the point of where it starts to look silly.
• Set onGoogleVisionBarcodesDetected to just console.log something as this was another fix for android.
• Update react-native-camera@2.6.0
• Update to master branch at react-native-camera@git+https://git@github.com/react-native-community/react-native-camera.git

How can I recreate it?

• Create new react-native project
• yarn add react-native-camera / npm install react-native-camera --save
• set type={RNCamera.Constants.Type.front} to use the front camera.
• set autoFocus={RNCamera.Constants.AutoFocus.on} (It's on by default anyway, this just ensures it.
• set onBarCodeRead={() => alert('barcode found')}
• Try to scan a Code39 / Code128 - (creatable here)
• Try to scan it and you'll find the camera will not focus on it however stay focused on the background. This is also true if you cover the camera with your finger, when you pull your finger away you expect the camera to be out of focus to the background and try and re-focus. This is not the case, it will stay focused at a medium / long distance.

Software Used & Versions

• iOS: 12.1.4
• react-native-camera: ^2.1.1 / 2.6.0
• react-native: 0.57.7
• react: 16.6.1

Code

I render the camera in a react-native-modal and I've put my code below.