CITATION.cff

cff-version: 1.2.0
message: "If you use this software, please cite it as below."
type: software
title: "Howdy Liveness Detection: Passive IR Reflectance Analysis for Anti-Spoofing in Linux PAM Facial Authentication"
authors:
  - family-names: George
    given-names: Collin
    affiliation: "Center for Competitive Statecraft and Strategic Policy"
repository-code: "https://github.com/collingeorge/howdy-liveness"
abstract: >
  A passive infrared reflectance analysis method for anti-spoofing liveness
  detection in Howdy PAM-integrated facial authentication on Linux. Exploits
  alternating IR emitter flash cycling in consumer IR cameras to discriminate
  live skin from photo and screen-based spoofing attacks using spatial variance
  of per-pixel IR delta maps.
keywords:
  - liveness detection
  - anti-spoofing
  - biometric authentication
  - infrared
  - PAM
  - Linux
  - facial recognition
  - Howdy
license: MIT
date-released: "2026-03-23"
version: "1.0.0"