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JsBarcode
Barcode generation library written in JavaScript that works in both the browser and on Node.js
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
As discussed previously, the barcode is the key printed part of a TR as far as access control goes. Generating a barcode by hand is tedious, but computers can do it easily. In fact, there are a lot of free software libraries that will generate barcodes for you and allow you to customize pretty much every aspect of them. For this demo, I used the JsBarcode library, which can be imported directly into a webpage without needing to download anything: https://github.com/lindell/JsBarcode