The driver is included in all kernels from 2.6.11 upwards.
Get the standalone driver (v0.6).
Get the patch for 2.6.7.
Get the patch for 2.6.10.

This is a Linux usb-misc driver for the Siemens ID Mouse USB FingerTIP Sensor.
The ID Mouse Professional uses the same sensor, so the driver might work there, too.
Just unpack the standalone driver and run make (assuming that your kernel is in /usr/src/linux).
The patch can be applied against the Linux kernels 2.6.7 and 2.6.10 (via "cd /usr/src/linux-2.6.n ; patch -p1 < linux-2.6.n-idmouse.patch").
Install the driver via modprobe, and then read the fingerprints out of /dev/usb/idmouseX or /dev/idmouseX, depending on your devfs settings. When the device is opened, a new fingerprint is read into the buffer, and can be read out as a pgm file.
Andreas 'ad' Deresch <aderesch ÄT>
Florian 'Floe' Echtler <echtler ÄT>