Scanner does not work as user

[Roland Wolters]

Once upon a time Sandy Pond wrote:
> chmod 777 $(sane-find-scanner | \
>             grep '^found USB scanner' | \
>             sed -e 's?^.*libusb:?/proc/bus/usb/?' -e 's?:?/?')

Ok, now scnaimage finds it, thank you very much.
But xsane now gives me a I/O device error:
/Failed to open device libusb:003:002
\Error during I/O device.

  :-(