# PC/SC Relay

Welcome to PC/SC Relay. The purpose of PC/SC Relay is to relay a smart
card using an contact-less interface. Currently the following contact-less
emulators are supported:

- Hardware supported by [libnfc](http://www.libnfc.org/)
- OpenPICC
- [Android Smart Card
  Emulator](http://frankmorgner.github.io/vsmartcard/ACardEmulator/README.html)

Command APDUs are received with the contact-less interface and relayed. The
Response APDUs are then sent back via RFID. The contact-less data will be
relayed to one of the following:

- to a *real* smart card inserted into one of the systems' smart card readers.
  The smart card reader must be accessible with PC/SC. The smart card may be
  contact-based *or* contact-less.
- to a [virtual smart
  card](http://frankmorgner.github.io/vsmartcard/ccid/README.html) that
  directly connects to `pcsc-relay`. The virtual smart card's native interface
  is used and (despite its name) PC/SC Relay does not need to access PC/SC in
  this case.