Fingerprint-lib

A Rust library for interfacing with R502-A and compatible fingerprint sensors via serial communication.

RAW implementation of this project is available in:

• RUST
• PYTHON
• CPP

⭐ Link to the Project

If link not redirecting use : https://github.com/kingsmen732/GROW_R502-A_fingerprint

This crate enables enrolling, verifying, listing, and deleting fingerprints using the sensor's built-in flash memory.

✨ Features

• Enroll fingerprints directly to the sensor's memory.
• Verify fingerprints against stored templates.
• Retrieve a list of all enrolled fingerprint IDs.
• Remove specific fingerprint entries.
• Supports [R502-A] and other UART-based fingerprint sensors (e.g., FPM10A, GT-521F52).

📦 Installation

Add the following to your Cargo.toml:

[dependencies]
fingerprint-lib = "0.1.0"
serialport = "4.2"  # Required for serial port communication

🚀 Usage

Here's an example of how to use the library:

use fingerprint_lib::fingerprint;
use std::time::Duration;

fn main() {
    let port_name = "/dev/ttyUSB0"; // Replace with your serial port
    let mut port = serialport::new(port_name, 57600)
        .timeout(Duration::from_secs(2))
        .open()
        .expect("Failed to open serial port");

    // Enroll a new fingerprint with ID 5
    fingerprint::enroll_fingerprint(&mut *port, 5).unwrap();

    // Verify a fingerprint
    fingerprint::verify_fingerprint(&mut *port).unwrap();

    // List all stored fingerprint IDs
    fingerprint::list_fingerprints(&mut *port).unwrap();

    // Delete a fingerprint with ID 5
    fingerprint::delete_fingerprint(&mut *port, 5).unwrap();
}

📜 Research colab in AIR CENTER

Research outcome supported by Indominus labs Private Limited and Digital Fortress Private Limited

💡 Sensor Compatibility

This crate is designed for fingerprint modules that communicate over UART and adhere to the GT-511C3 / R30x / R502-A packet protocol.

Tested Modules

• R502-A (GT series)
• Other compatible modules using Adafruit's fingerprint protocol.

📜 License

This project is licensed under the MIT License. See the LICENSE file for details.

👋 Contributions

Contributions are welcome! Feel free to open pull requests or suggest new features.

Let me know if you'd like me to auto-generate a Cargo.toml for publishing!