If you need to add the possibility of a bar code reader to nuBuilder you can use an open-source library like ZXing (1D/2D) or Quagga (1D). Both are working well with nuBuilder and depending on the case, you can use one or the other. In this example, I present the implementation of the ZXing library.
What can be as well very helpful is the usage of any smartphone as your remote WiFi camera. To do so, you can use the Iriun application to connect your mobile to your PC.
Another possibility is to run nuBuilder from your smartphone with its camera. I have also tested such a solution and it works well. The linked video shows how to do it.
ZXing bar code reader - YouTube link
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