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Date: Thu, 6 Aug 2015 06:42:27 -0600 (MDT)
From: Warren Block <wblock@wonkity.com>
To: Anthony Campbell <ac@acampbell.uk>
cc: freebsd-questions@freebsd.org
Subject: Re: Permissions problem for sane
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References: <20150806104335.GA27748@ithaca.acampbell.uk>
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On Thu, 6 Aug 2015, Anthony Campbell wrote:

> My first posting to this list. I've been using 10.1 for a couple of
> months on my Thinkpad T60 without problems.
>
> Trying to get my Epson 1650 scanner to work, I found it was only
> detected as root. It's at /dev/usb:/dev/ugen0.2
>
> After googling, I found instructions on Freebsd manual for 8.7, which
> involved creating a usb group and making/modifying /etc/devfs.rules.
> This didn't work.
>
> I then added myself to the wheel and operator groups but again no
> result.
>
> Should I modify the permissions on /dev/ugen0.2?

That will work temporarily.  The scanner might not always appear at 0.2, 
though.  A similar way of doing this is to make your normal user a 
member of the operator group, and assign all USB devices to that group 
with /etc/devfs.rules:

   add path 'usb/*' mode 0660 group operator