{
  "added_at": "2026-11-08",
  "category": "reconstruction-cases",
  "class": "hardware",
  "description_en": "vfs495-driver implements a Linux libfprint TOD driver for the Validity VFS495 swipe fingerprint reader. Its documented research traces the sensor's USB handshake, encrypted command and image streams, and firmware patch setup; a build recipe extracts required command data from the user's HP SoftPaq download.",
  "description_zh": "vfs495-driver 为 Validity VFS495 滑动式指纹读取器实现 Linux libfprint TOD 驱动。研究笔记追踪传感器的 USB 握手、加密命令和图像数据流及固件补丁加载；构建配方从用户下载的 HP SoftPaq 提取所需命令数据。",
  "entry_url": "https://awesomerea.org/resources/vfs495-driver-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/vfs495-driver-case/",
  "evidence_class": 2,
  "evidence_status": "observed",
  "evidence_url": "https://github.com/Ahmad-b1995/vfs495-driver/blob/a30ad91b81f56fc1681c9346b2d0103b97c0d277/README.md",
  "group": "cases",
  "id": "vfs495-driver-case",
  "json_url": "https://awesomerea.org/resources/vfs495-driver-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/vfs495-driver-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/vfs495-driver-case/index.md",
  "name": "vfs495-driver: a Linux driver from fingerprint-reader protocol research",
  "name_zh": "vfs495-driver：基于指纹读取器协议研究的 Linux 驱动",
  "record_type": "resource",
  "relationship": "independent-reconstruction",
  "requirement_facets": [
    "prerequisites",
    "prerequisites",
    "testing",
    "license"
  ],
  "requirements": [
    "A Validity VFS495 reader with USB ID 138a:003f and libfprint with TOD support are required.",
    "The build downloads HP SoftPaq sp84530 to extract setup commands and firmware patches; the repository does not contain that data.",
    "The author reports testing on one HP ZBook 17 G3 with Ubuntu 25.10 and 26.04; other sensor variants may need different patches.",
    "LGPL-2.1-or-later license."
  ],
  "requirements_zh": [
    "需要 USB ID 为 138a:003f 的 Validity VFS495 读取器，以及支持 TOD 的 libfprint。",
    "构建过程下载 HP SoftPaq sp84530，提取设置命令和固件补丁；仓库不含这些数据。",
    "作者报告在一台 HP ZBook 17 G3 上测试了 Ubuntu 25.10 和 26.04；其他传感器版本可能需要不同补丁。",
    "LGPL-2.1-or-later 许可证。"
  ],
  "scope": "unknown",
  "targets": [
    "firmware",
    "protocol"
  ],
  "url": "https://github.com/Ahmad-b1995/vfs495-driver",
  "verification": "source-reviewed",
  "verified_at": "2026-11-06"
}