Case study

libfprint-microarray: reconstructing the MAFP fingerprint reader USB protocol

libfprint-microarray reconstructs the USB control workflow of the MicroarrayTechnology MAFP fingerprint reader as a Linux libfprint driver. Analysis of MicroarrayFingerprintDevice.dll and USB captures informs its handshake, image polling, fingerprint enrollment and verification commands. The author reports successful enrollment and verification on a physical 3274:8012 device.

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

Stars: 12
Last commit: 2026-03-23
Language: C
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

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

How evidence classes are assigned

Requirements & limits

Prerequisites: MicroarrayTechnology MAFP fingerprint reader with USB ID 3274:8012 and a libfprint source tree.
Testing evidence: The author reports enrollment and verification on real hardware.
Limits: Enrollment skips clearing stored templates when free FID slots are available; identify search is not implemented.
License: MIT License.

Cite

BibTeX

@misc{libfprint-microarray-mafp-case,
  title = {{libfprint-microarray: reconstructing the MAFP fingerprint reader USB protocol}},
  howpublished = {\url{https://github.com/jdillon/libfprint-microarray}},
  url = {https://github.com/jdillon/libfprint-microarray},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/libfprint-microarray-mafp-case/}}
}

Plain text

libfprint-microarray: reconstructing the MAFP fingerprint reader USB protocol. https://github.com/jdillon/libfprint-microarray (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/libfprint-microarray-mafp-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

README.md GitHub · jdillon/libfprint-microarray · Revision 82cd97e
docs/reverse-engineering.md GitHub · jdillon/libfprint-microarray · Revision 82cd97e