Case study

FT9201 Linux: reconstructing fingerprint-reader USB capture

FT9201 Linux documents the USB exchanges needed to poll finger presence and capture a 64×80 grayscale frame from a FocalTech FT9201 reader. A C libusb proof of concept follows the recorded control-transfer and bulk-IN sequence and writes raw and PGM images.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 2
Last commit: 2026-04-18
Language: C
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: Requires a FocalTech FT9201 reader with VID:PID 2808:9338, Linux and libusb 1.0.
Limits: The implementation is a userspace proof of concept; libfprint, PAM and kernel-driver integration are absent.
License: MIT License.

Cite

BibTeX

@misc{ft9201-linux-case,
  title = {{FT9201 Linux: reconstructing fingerprint-reader USB capture}},
  howpublished = {\url{https://github.com/vitasnay-droid/ft9201-linux}},
  url = {https://github.com/vitasnay-droid/ft9201-linux},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/ft9201-linux-case/}}
}

Plain text

FT9201 Linux: reconstructing fingerprint-reader USB capture. https://github.com/vitasnay-droid/ft9201-linux (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/ft9201-linux-case/

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About this entry

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Primary sources

docs/protocol.md GitHub · vitasnay-droid/ft9201-linux · Revision 8154d87
README.md GitHub · vitasnay-droid/ft9201-linux · Revision 8154d87