[fprint] Drivers in user space or kernel space.

[Fausto Carvalho Marques Silva]

Hi folks,
i have an old dout about the fingerprint scanner support in the linux 
world.
Why does the fingerprint scanners drivers are all written in the user 
space with libusb and
not in the kernel space? It would be more easy to configure in ".config" 
and wide availble if
it were in the kernel configuration. Many other things seens to be 
inside the kernel but not
fingerprint scanners. Do you have any explanation for this (historical 
or technical?
Thanks.

-- 
Fausto Carvalho Marques Silva