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I have 4 software programmers working for meДЄnd am myself a post graduate in software engineering

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All the hardware i get work with windows, but i find it difficult to work with Windows and want to make have solutions made in UNIX/LINUX environment I am the director of a company that integrates and market access control and time management solutions based on fingerprint sensors. If you have any further questions, please use the mailing list.

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If you can send me all information that you have gathered on the Digital Persona 4000 I would be extremely thank full as it would give me a head start that I need to write the deamon that we will need to support our client.Д®verything I know is published at and you can find more tidbits in the mailing list archives. Please let me know if you require further information about our company as I will gladly supply any info you require.

IвЂ™m willing to go the distance and will share all knowledge with whom ever needs it. Since this would be the first time that I touch a Finger scanner, I will need a lot of help. I have spoken to many people and it was agreed that a Linux Access Control Server will be a long term solution to our clients needs. Our company supports Open Source as far as possible and as far as we know a system using the Digital Persona 4000 using Linux has not yet been developed for our clients specific need. We are currently in talks to have the system moved from Microsoft to Linux as Microsoft has proven to be unreliable, has a lot of dataloss due to regular reboots and has several security issues that will need to be addressed before installing at another site. The system was written in M$ Basic and has several flaws. The system uses the Digital Persona 4000 to verify the employee and if heвЂ™s comming in or going out. I was yesterday asked to have a look at a Access Control solution installed by an individuel about a year ago.

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dsdвЂ™s weblog В» Blog Archive В» Digital persona fingerprint driver progress Says:.

You can leave a response, or trackback from your own site.Дў7 Responses to вЂњDigital Persona UareU Fingerprint Sensor driver for LinuxвЂќ You can follow any responses to this entry through the RSS 2.0 feed. On Saturday, November 12th, 2005 at 12:43 pm and is filed under Gentoo.

IвЂ™ve recently launched a new project called fprint which supports DigitalPersona devices under Linux.

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Update November 2007: I see IвЂ™m still getting a lot of hits from вЂњdigitalpersona linuxвЂќ on Google (IвЂ™m still #1). If any other Linux users are in possession of one of these keyboards or a standalone UareU reader, then please email me. IвЂ™ve been experimenting trying to guess what it might be doing, but I havenвЂ™t been able to provoke the expected response yet (which is the device sending a section of the firmware back to the host computer - again strangeвЂ¦). IвЂ™m a bit stuck on the next step, the sniffed data suggests the Windows driver is doing things which are impossible (sending data in the wrong direction). So far I have created a script to extract the firmware from the windows driver distribution, and a skeleton driver which pulses the light around the sensor 3 times on plugin (looks very cool!). IвЂ™m naming my driver dpfp and the initial work can be found here. Can anyone help me find his email address?

This guy also seems to have run into the uareu module.

The device is firmware-based, or at least, the driver sends a 1904 byte blob of data found inside one of the windows DLL files on every plugin.

A presentation ( html, pdf) suggests that they have produced/obtained a uareu kernel module which has a /dev/usb/uareu char interface.

VALinux Japan have done some biometrics work, including fingerprint-based login using UareU devices.

The encryption algorithm might be XTEA ( source).

вЂ¦and this forum post suggests that the Microsoft keyboard lacks some features of the UareU 4000.

вЂ¦but a developer familiar with the UareU Windows API suggests that the encryption key is defined by the host computer at installation time.

If this is true, the fingerprint image is encryptedвЂ¦.

The fingerprint sensor is probably a Digital Persona UareU 4000.

The fingerprint sensor is almost certainly designed/manufactured by Digital Persona, a biometrics company recently assimilated by Microsoft.

Through this information and some extra googling, I now know: Thanks to Tony Vroon from Gentoo for donating this device to me, and to the people who sent emails/comments after the last mention of this. The keyboard works fine already (its just HID), but the fingerprint reader sensor requires its own driver, which IвЂ™m aiming to create. I recently mentioned my new project, writing a Linux driver for the вЂњMicrosoft Optical Desktop with Fingerprint ReaderвЂќ keyboard.