DIY sw - barcode reader: CNP string into a desired location

Question

I have an application for our volunteering organization to manage accesses to the place where we operate. A barcode-reader (TEEMI barcode scanner) reads each volunteer ID to register IN/OUT timing. We are currently using a sw that runs on an independent window and wants to be always opened, with the cursor located specifically in the small input window. It can work manually or automatically:

• manual -> you can type your ID and press enter
• automatic -> you pass the card under the reader, then it reads the information, writes a string here and automatically enters the command.

We cannot use a PC only for this application, just to keep alive a page with the cursor always in the desired position.

Is there a way to be triggered from the barcode-reader when it reads something, then copy and paste this string into the desired window, without having this window directly opened? I hope I can do that via sw...

any advice? I can program something with python...do you have any idea?

Thank youn in avdance for your attention.

Bye all! PIB