Currently available barcode scanners cannot be run on Windows tablets or laptops.
To scan 2D barcodes with a laptop PC camera or a camera connected via USB, it is desirable to be able to scan on a Windows PC.
The web browser accessible camera feature is also getting better, so it's probably the time to support barcode scanning in a web browser.
If web browser support is absolutely difficult, support for the PowerApps app on Windows Store alone is also fine.
The old web barcode scanner, supported as experimental features, cannot read 2D codes (e.g. QR-Code).Because of this, this does not meet my hope.
We built the barcode scanner within Power Apps to address a business need only to find out its only available in iOS or Android platforms and not from a web browser.