Hi all, I have exactly same system. 
I made USB snoop from this device with SniffUsb 2.0 (Win 7). It contains 
initializating and finger scanning... 
You can see it on  http://www.karry.wz.cz/download/DigitalPersonaUsbSnoop.log

Has anyone started experimenting with this device? 
I tried add this usb id to /libfprint/drivers/uru4000.c 

http://www.karry.wz.cz/download/digitalpersona.patch

But it failed while initializing usb device

> fprint_demo
fp:debug [fp_init] 
fp:debug [register_driver] registered driver upekts
fp:debug [register_driver] registered driver aes4000
fp:debug [register_driver] registered driver aes2501
fp:debug [register_driver] registered driver uru4000
fp:debug [register_driver] registered driver vcom5s
fp:debug [register_driver] registered driver upeksonly
fp:debug [find_supporting_driver] driver uru4000 supports USB device 138a:0007
async:debug [fp_async_dev_open] 
** Message: now monitoring fd 9
uru4000:error [dev_init] test iface 0: num_altsetting 1
uru4000:error [dev_init]  255, 0, 0
uru4000:error [dev_init] could not find interface
async:error [fp_async_dev_open] device initialisation failed, driver=uru4000
** Message: no longer monitoring fd 9

I never use user space usb library before. Could anyone take a look what is 
wrong? Thank you. 

Dne Čt 26. srpna 2010 09:32:45 aquilinux napsal(a):
> hi all, i'm a linux sysadmin who have a
> 
>       Bus 001 Device 003: ID 138a:0007 DigitalPersona, Inc
> 
> fingerprint reader on HP ProBook 6540b running Ubuntu 10.04.
> i know it's not currently supported by fprint, so, if i can contribute
> in any way with testing, sending outputs or whatever, please let me
> know.
> 
> cheerz ;)
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