I have an HP dv4 2080br with a fingerprint reader that works fine on Windows 7.
lsusb lists it as
Bus 001 Device 004: ID 138a:0005 DigitalPersona
How can I use it on Ubuntu 10.10?
There is a packaged called fprint available in this PPA However, it does not appear that your device is listed as "Supported". There is a bug Bug #285089 Which details issues with a similar USB device id though I don't believe it is related nor confirmation that this device does not work with the fprint package.
try this! searched for around 5 months trying to get mine to install..... you WILL find one of the three will work. https://launchpad.net/~fingerprint as far as which one will work... well thats trial and error
Assumed that you are using Ubuntu 12.10.
You should see the following.
Enroll your fingerprint.
For additional security you may want to use only password to log in to the desktop. Then do the following.
and save and quit.