card-backend-pcsc is used at run time in 10 crates (of which 1 optionally). It is a direct run-time dependency in 6 crates. It's used only as a dev dependency in 3 crates.

Depender (with downloads and own rev deps) card-backend-pcsc version
210 openpgp-card-tools ^0.5
160 age-plugin-openpgp-card ^0.5.0
1 sequoia-keystore-openpgp-card ^0.5
openpgp-card-tool-git ^0.5
openpgp-card-ssh-agent ^0.5
yubikey-management ^0.5
23K 2 ssh-agent-lib dev ^0.5.0
210 2 openpgp-card-rpgp dev ^0.5
2 openpgp-card-sequoia dev ^0.5