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Laptop's fingerprint reader, is it possible to reuse it on desktop? Answered

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the dead laptop is a HP Pavillion dv3 4010sl, the sensor is a Validity VFS301 (cdk1071_r04_hf) as written on the sensor itself.

if i remember correctly it was shown as a USB peripheral.

maybe is simple and it need just some resoldering to a USB cable,

the problem is that the flat cable connecting it to the motherboard has 6 pins/lines and my knowledge in electronics is quite limited...

I've found online what seems like a motherboard schematics (pg.48) and the vendor's sensor's manual.

Does Anyone knows if is possible, If yes how?

5 Replies

rthomas6 (author)2017-03-01

I just picked up the same (or a very similar) device and I'm looking to do the same thing.

From looking at that diagram, Pins 1&2 are ground, Pin 3 is 5V, pins 5 and 6 are data and pin 4 is 3.3V. USB doesn't normally require 3.3V but with this, there's no telling.

I think I'll try connecting this up to a Raspberry Pi since the 5V and 3.3V are readily available and if it's detected, it will show up in the system logs.

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sellena (author)2015-07-23

hi, I have exactly your fingerprint reader. I would know if you had some good results and, if you can post your results.

Thank you

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caitlinsdad (author)2013-08-20

You would need the drivers that would work on a regular PC so you do not need to hack a custom set of drivers which may have been proprietary to your laptop.. In terms of the wiring, the extra connection to the USB normal 4 or 5 lines was probably to the onboard BIOS 3v battery so it would be live when the power was turned off.

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CladZo91 (author)caitlinsdad2013-08-20

thank you!! i already got drivers that works, i see so is it possible to undersand wich lines should be solder to an usb cable? i think the schematics can be helpful but i cannot read them...

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caitlinsdad (author)CladZo912013-08-20

You would probably want someone with real electronics knowledge to verify but you've got USB DATA positive(P) and USB DATA negative(N), +5V or VCC+, and downward pointing triangles as GND or ground. Look up the pinout on any USB plug wiring diagram, if there are 5 pins, one is not used. Dunno if you need any additional resistors or capacitors to buffer the connections. Good luck.

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