I meant that the QR code should be larger, to encode the additional information shown after the registry patch as additional URL parameters. On re-reading, I did not make that clear.

Nobody is decoding QR codes by hand, so it isn't that big a deal to go from "https :// www.windows.com / stopcode ? code=ACPI_BIOS_ERROR" to "https :// www.windows.com / stopcode ? code=ACPI_BIOS_ERROR & p1=0000000000000002 & p2=FFFF9A0..."

Ah, you're right. I didn't realize the bugcheck parameters weren't included in the code, that's definitely something which would be helpful. However then you still might run into the second problem of not being able to reliably render it in a crashing state. That's the only reason I could think why they would not include those parameters in the QR.