[matheusmoreira]

> In the end I sniffed the USB protocol of the windows driver and was delighted to see how they abused the control endpoint rather than setting up proper data endpoints.

Is there a better way to implement this? They seem to use it for any non-standard feature. My laptop's keyboard uses the control endpoint to control the LEDs.

[pilif]

you're supposed to use the control endpoint to negotiate which data endpoints to set up in what way for communication and then communicate over those.

In the case of this barcode scanner all communication was done over the control endpoint though.