I'm looking for a way to connect fingerprint scanner with raspberry pi3 using python. I'd like to use only gpio or hat (not usb) interface. I'm searching for a while without figured out, so I've decided to ask. Are there any fingerprint to fit my case?

  • EDIT

I want to achieve biometric attendance system (fingerprint + rfid sensor) something like that, but I really prefer GPIO over USB interface (because of physical space in my case)

this is another project i've found: example

video of this project: https://www.youtube.com/watch?v=4FLe8VO5jXs

Moreover, I really prefer a fingerprint like this module, because I have to fix it to a box printed in 3d:


  • Ah, there are finger print readers using UART. – tlfong01 Jun 15 '19 at 13:19
  • any suggestion? – andreah Jun 16 '19 at 21:53
  • Ah, I never suggest any commercial products in this forum. I can only tell you that I almost never buy things from expensive shops like AdaFruit, because I am a poor hobbyist and cannot afford them. Actually I have never bought anything from AliExpress, because TaoBao is even cheaper. – tlfong01 Jun 16 '19 at 23:55
  • Not sure what search queries you where using but, Googling for fingerprint scanner GPIO or serial similar:stackexchange resulted in finding a related question. I'd suggest more research and editing your question to include what flavor of RPi you're going to attempt this on as there may be some differences between RPis that could lead to headaches. And is there a reason why USB is being avoided for this use case? – S0AndS0 Jun 19 '19 at 0:52
  • 1
    Excellent edit @andreah, and I hope someone with more direct knowledge is able to provide an answer. One thing to keep in mind though is if you're willing to sacrifice one of the USB ports it may be possible to solder directly to it, though that should really only be considered if ya cannot find a compatible hat. One questions too; have ya considered how you're going to keep the data and device secure?... I see many bad days in the future if an adversary where to scrape all that data about those in attendance. – S0AndS0 Jun 19 '19 at 16:39

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