nmikhailov/Validity90
Reverse engineering of Validity/Synaptics 138a:0090, 138a:0094, 138a:0097, 06cb:0081, 06cb:009a fingerprint readers protocol observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3509
- days_rel: n/a
- days_push: 2421
- n_releases_24m: 0
Adoption not part of the score
1875 stars · 114 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A reverse-engineering project for Validity/Synaptics fingerprint readers (USB IDs 138a:0090, 138a:0094, 138a:0097, 06cb:0081, 06cb:009a), producing a protocol specification and a free libfprint driver. It includes a Wireshark dissector and a standalone prototype for testing scan and database-check operations.
Use cases
- get Validity fingerprint reader working on Linux
- reverse engineer fingerprint sensor protocol
- libfprint driver for 138a:0090
- decrypt fingerprint reader USB communication in Wireshark
- use fingerprint scanner on ThinkPad with Linux
- understand Validity 138a:0097 protocol
When to choose
- you own a supported Validity/Synaptics reader and want Linux fingerprint support
- you want to study or contribute to the protocol specification
- you need a Wireshark dissector for the reader's TLS-encrypted traffic
When to avoid
- you need a production-ready driver - the integrated libfprint driver is not finished
- your device is 138a:0091, which uses a different protocol (see Validity91)
- you need Windows fingerprint support
Facets
library · maturity experimental
reverse-engineering auth security hardware operating-systems reverse-engineering python cpp fingerprint-reader libfprint protocol-specification wireshark-dissector biometrics driver linux
1 source
- readme: https://github.com/nmikhailov/Validity90 · fetched 2026-08-28 · 4d2ff80ab756
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| nmikhailov/Validity90 | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="nmikhailov/Validity90")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem