# PC/SC based smart card backend This crate provides `PcscBackend` and `PcscTransaction`, which are implementations of the `CardBackend` and `CardTransactions` traits from the [`card-backend`](https://crates.io/crates/card-backend) crate. This implementation uses the [pcsc](https://crates.io/crates/pcsc) Rust wrapper crate to access OpenPGP cards. Mainly intended for use with the [openpgp-card](https://gitlab.com/openpgp-card/openpgp-card) library. ## Documentation on PC/SC [PC/SC](https://en.wikipedia.org/wiki/PC/SC) is a standard for interaction with smartcards and readers. The workgroup publishes an [overview]( https://pcscworkgroup.com/specifications/) and a [set of documents](https://pcscworkgroup.com/specifications/download/) detailing the standard. The [pcsc-lite](https://pcsclite.apdu.fr/ ) implementation is used on many free software systems ([API documentation for pcsc-lite](https://pcsclite.apdu.fr/api/group__API.html)). Microsoft [documentation](https://docs.microsoft.com/en-us/windows/win32/api/winscard/) about their implementation of PC/SC.