pcsc

90.5K downloads in the last 30 days (3.0K/day), up 25% from the previous period.

138 crates depend on pcsc. Reasonable ecosystem adoption, though not yet a core dependency.

The API has been stable (1.x) for over 9 years with 23 releases. This level of maturity means you can depend on it without worrying about breaking changes.

Only 2 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

At 20KB, pcsc is lightweight. Small crate size correlates with focused, well-scoped functionality.

Notable dependents include webauthn-authenticator-rs, yubikey, openpgp-card-pcsc, jpki, solo2. When high-quality crates choose pcsc, it's a strong quality signal.