How to read barcode device data stream through node.js in windows, macos and linux?

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I want to read stream of data from HID Keyboard device i.e. "Barcode Scanner".

Through reading stream I want to pass that to web application.

The barcode shows under Keyboard in Device Manager.

in DeviceManager --> Keyboard --> HID Keyboard Device.

What is the best link or tutorial.

What I have tried:

Tried many libraries but not working or reading data in node.js.
New to node.js.
Some libs detect HID device but does not read.

Posted 27-Jun-24 5:13am

Arsalan Jibran 2024

Updated 27-Jun-24 5:22am

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OriginalGriff · Answer 1 · 2024-06-27T05:27:00

Basically, you probably can't - most barcode scanners are configured to operate as a keyboard emulation and the code comes in to your browser as a stream of key presses, and you cannot detect if any particular keypress came from a "real keyboard" or a "virtual keyboard" (which would include scanners).

It is generally possible to configure the scanner to give specific lead-in and tail-out sequences so you can tell "this is barcode data" but how you configure that will depend on the specific scanner: you would have to talk to the manufacturer to change the setting.