Python library for ZFM fingerprint sensors
The PyFingerprint library allows to use ZhianTec ZFM-20, ZFM-60, ZFM-70 and ZFM-100 fingerprint sensors on the Raspberry Pi or other Linux machines. Some other models like R302, R303, R305, R306, R307, R551 and FPM10A also work.
Note: The library is inspired by the C++ library from Adafruit Industries: https://github.com/adafruit/Adafruit-Fingerprint-Sensor-Library
Installation
There are two ways of installing PyFingerprint: Installation of the stable or development version. The stable version is distributed through the PM Code Works APT repository and is fully tested but does not contain the latest changes.
Installation of the stable version
Add PM Code Works repository:
-
Debian 9/Ubuntu 16 & 17:
echo "deb http://apt.pm-codeworks.de stretch main" | sudo tee /etc/apt/sources.list.d/pm-codeworks.list -
Debian 10/Ubuntu 18 & 19:
echo "deb http://apt.pm-codeworks.de buster main" | sudo tee /etc/apt/sources.list.d/pm-codeworks.list
Add PM Code Works signing key:
wget -qO - http://apt.pm-codeworks.de/pm-codeworks.de.gpg | sudo apt-key add -
sudo apt update
Install the package:
sudo apt install python3-fingerprint
Installation of the development version
The development version contains the latest changes that may not have been fully tested and should therefore not be used in production. It is recommended to install the stable version.
Install required packages for building:
sudo apt install git devscripts equivs
Clone this repository:
git clone https://github.com/bastianraschke/pyfingerprint.git
Build the package:
cd ./pyfingerprint/src/
sudo mk-build-deps -i debian/control
dpkg-buildpackage -uc -us
The library supports Python 2 and Python 3. There are one Debian package for each. It's up to you which version you install.
For Python 3 use:
sudo dpkg -i ../python3-fingerprint*.deb
For Python 2 use:
sudo dpkg -i ../python-fingerprint*.deb
Install missing dependencies:
sudo apt -f install
Alternative installation using PIP
If you do not have a Debian based OS or something does not work you can also install the Python package via PIP:
pip install pyfingerprint
NOTE: It is important to not use the Debian package and PIP package at the same time!
Setup
Allow non-root user "pi" (replace it correctly) to use the serial port devices:
sudo usermod -a -G dialout pi
sudo reboot
How to use the library
Enroll a new finger
python /usr/share/doc/python-fingerprint/examples/example_enroll.py
Search an enrolled finger
python /usr/share/doc/python-fingerprint/examples/example_search.py
Delete an enrolled finger
python /usr/share/doc/python-fingerprint/examples/example_delete.py
Download image of a scanned finger
python /usr/share/doc/python-fingerprint/examples/example_downloadimage.py
Generate a 32-bit random number on the ZFM hardware PRNG
python /usr/share/doc/python-fingerprint/examples/example_generaterandom.py
Further information
See my blog post for more information:
https://sicherheitskritisch.de/2015/03/fingerprint-sensor-fuer-den-raspberry-pi-und-debian-linux-en/