# uunicorn/python-validity

Validity fingerprint sensor prototype

Repository: https://github.com/uunicorn/python-validity
Canonical: https://ross.abutalabs.com/products/python-validity
Language: Python
License: MIT
License Family: permissive
Last push: 2025-06-10T11:29:00+00:00

## Health v2 (maintenance only)
Score: 44/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 26, release rhythm 35, longevity 100
- inputs: {"age_days": 2663, "days_push": 449, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1231, forks 120 (observed 2026-08-28T04:04:04.232863+00:00)

## What it is
A Python driver and DBus service for Validity fingerprint sensors on Linux, integrating with fprintd for biometric authentication. It supports enrolling and identifying fingerprints for system login via PAM.

## Use cases
- enable fingerprint login on a Linux laptop with a Validity sensor
- enroll fingerprints with fprintd-enroll on Ubuntu or Arch
- fix fingerprint sensor not working after suspend
- factory-reset a Validity fingerprint chip
- replace stock fprintd with an open driver for unsupported sensors

## When to choose
- you have a Validity fingerprint sensor unsupported by stock fprintd on Linux
- you want PAM-based fingerprint authentication on Ubuntu, Arch, or Fedora
- you need to debug or reset a Validity sensor

## When to avoid
- your fingerprint sensor is already supported by upstream libfprint/fprintd
- you are not on a Linux system
- you need a GUI-driven biometric setup without CLI steps

## Facets
- artifact type: library
- maturity: active
- function: auth, security, cli, sdk
- domain: security, hardware, developer-tools, operating-systems
- platform: python, cli
- tags: fingerprint-sensor, biometric-authentication, fprintd, dbus-service, device-driver, validity-sensors, linux

## Member repositories
- uunicorn/python-validity (main) score 44

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:04.232863+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T08:22:32.687341+00:00, confidence not recorded.
  - readme: https://github.com/uunicorn/python-validity (fetched 2026-08-28T04:04:04.232863+00:00, sha 9d32de970090)
- Data as of 2026-08-30T08:39:29.467469+00:00.