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Thread: HOWTO: Fingerprint reading in Ubuntu with fprint

  1. #21
    Join Date
    Mar 2008
    Beans
    22

    Re: HOWTO: Fingerprint reading in Ubuntu with fprint

    Hi PieEater,
    I wanted to use my fingerprint reader too. I was searching an discovering. I've found few projects dealing with this. The bigges (I think) is fprint. I'm subscribed in fprint mailing list and I can tell it is still in developement mode and it can provide you just logging into system. There are no more other special program supporting it yet. But during last month it has few devel-jumps and this fprint project is growing up. We have to be patient.

    BTW: Trust that finger print method isn't as secure as you think. Everyone can make copy of your fingermark. I will try it too in close future and I will tell you if my girlfriend can log into my pc throught fingerprint reader.
    There is little HOWTO: How to fake fingerprints?
    Interesting. Isn't it?

  2. #22
    Join Date
    Jan 2008
    Location
    Switzerland
    Beans
    8
    Distro
    Ubuntu 8.04 Hardy Heron

    Re: HOWTO: Fingerprint reading in Ubuntu with fprint

    Quote Originally Posted by rplancius View Post
    Edit May 27, 2008. Since the installation of the fingerprint reader, the Update Manager hangs. It doesn't show the password pop-up screen, nor does it ask for a fingerprint. The only way of ending this, is killing the process. There are some posts saying the hosts file is incorrect. I changed the /etc/pam.d/common-auth file back to it's original state and the update manager works like before. Perhaps needless to say that fingerprint authentication is now disabled. Hope this helps someone.
    That is normal at the moment, I suppose. It does work, even if it doesn't show any message.
    But you might have only one try...

  3. #23
    Join Date
    Jun 2008
    Location
    NYC, USA
    Beans
    2
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: HOWTO: Fingerprint reading in Ubuntu with fprint

    Working, sort of, with HP 6910 Ubuntu Hardy 64-bit, 2.6.24-18-generic

    Freezes trying to configure users via gui.

    Logon requires finger scan as well as password.

    The two issues above kind of defeat the purpose for me, as I'd like to scan and not type. It is an extra step. I guess it is more secure.

    But thanks to the folks responsible for writing and testing this. Hopefully the bugs can get worked out.

    Cheers,

    CS

  4. #24
    Join Date
    Nov 2006
    Location
    United States
    Beans
    666
    Distro
    Ubuntu Development Release

    Re: HOWTO: Fingerprint reading in Ubuntu with fprint

    Thread updated.
    The one and only, Master Kernel Thread
    KernelCheck - Finally. A way to easily download, compile, and install the latest kernel. Release 1.2.5 available now.

  5. #25
    Join Date
    Dec 2006
    Beans
    1

    Re: HOWTO: Fingerprint reading in Ubuntu with fprint

    Great Tutorial. Works perfect for me and my Microsoft Fingerprint Reader .

    It even works better than under Vista.

    z3r0

    PS: Sorry 4 my bad English

  6. #26
    Join Date
    May 2008
    Beans
    4

    Re: HOWTO: Fingerprint reading in Ubuntu with fprint

    Hi guys,

    Any news on updates on displaying scan requests in gui?

    Cheers

    PieEater

  7. #27
    Join Date
    Nov 2007
    Beans
    130
    Distro
    Ubuntu 13.04 Raring Ringtail

    Re: HOWTO: Fingerprint reading in Ubuntu with fprint

    This worked for me, if I ran
    Code:
    sudo fprint_demo
    but if I ran just
    Code:
    fprint_demo
    It would not work.

    I tried the workaround of adding my user to the plugdev group and the I got
    Code:
    error loading enrolled prints
    This turned out to be because the /home/user/.fprints directory was owned by root, so I did
    Code:
    sudo chown -R $USER /home/user/.fprints
    it started working.

    Is this correct, or have I opened a security hole?


    Although fprint_demo works on my Tecra A9, it does report a couple of errors while scanning or verifying
    Code:
    upekts:error [read_msg] non-zero bytes in cmd response
    upekts:error [read_msg28] expected response, got -1 seq=0
    Both messages are produced for each action.

    I get this every time the scanner is used, eg verifying your finger and enrolling your finger produce this error, but deleting a fingerprint file does not. Also on enrolling, I only get the error once, not three times.
    Last edited by Paresh; July 17th, 2008 at 10:25 AM.
    "How did it get so late so soon"
    To the world you may be one person, but to one person you may be the world.

  8. #28
    Join Date
    Sep 2006
    Beans
    17

    Re: HOWTO: Fingerprint reading in Ubuntu with fprint

    I followed the directions as posted, and they seem to work, but sadly I get a segfault whenever sudo is used. However, the fingerprint auth works when logging in. I can't seem to figure this out, any suggestions?

  9. #29
    Join Date
    Jul 2007
    Beans
    1

    Re: HOWTO: Fingerprint reading in Ubuntu with fprint

    Quote Originally Posted by Nurionn View Post
    Thanks, that worked almost perfect for me.

    I have only one problem: Since I installed my fingerprint reader, I cannot change network or user settings using the GUI.
    If I click on "Unlock" the window freezes for ~20sec and then it shows an error message saying approximately: "authentification failed! an unexpected error has occurred." (German version: "Authentifizierung fehlgeschlagen! Es ist ein unerwarteter Fehler aufgetreten.")

    Has anyone an idea?
    I was having the same problem until I realized that I can insert the

    auth sufficient pam_fprint.so

    into any pam.d file. So instead of entering this into the common-auth which is pulled by most files/auth methods I insert this line into the functions I wish to have my finger reader. For example if I want my finger reader to unlock my screensaver I inserted it into the gnome-screensaver (above the include common-auth section). The final product looks like this.

    auth sufficient pam_fprint.so
    @include common-auth
    auth optional pam_gnome_keyring.so

    Now my finger reader works for just my gnome-screensaver and doesn't cause my policy kit to lock up. I have a feeling the pam_fprint.so has not been developed for the new policy kit in 8.04. Hope this helps, you can explore with different pam.d files and turn the finger reader on or off.

  10. #30
    Join Date
    May 2006
    Location
    Croatia
    Beans
    24
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: HOWTO: Fingerprint reading in Ubuntu with fprint

    I have a problem

    Code:
    fbrun_demo
    ** Message: now monitoring fd 4
    upeksonly:error [dev_init] could not set configuration 1
    async:error [fp_async_dev_open] device initialisation failed, driver=upeksonly
    ** Message: no longer monitoring fd 4
    And message in fprint_demo "Could not open device."

    Using libfprint-20080810-6b8b17f5 and fprint_demo-20080319-5d86c3f7
    libusb is 0.9.2

    lsusb
    Code:
    147e:2016
    it is UPEK TouchStrip
    Last edited by simo; October 6th, 2008 at 10:52 PM.

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