Client library to communicate with Pidiod.

• int init(SERVERADDRESS, SERVERPORT)
• int registerOnLocation(id1, id2, location, ttl)
• int clearLocaton(location)
• string onLocation(location)
• string id2genuine(id)
• string id2pseudo(id)
• string error2string(int error)

Maybes:

• string cpr2name(cpr)

Pidio retrieves UID from an external reader, and sends it to the Pidiod server, together with its location ID. And so makes a map between UIDs and location.

Currently implemented to support input from a magnetic card reader or keypad. At later phase needs to support input from rfid tag readers.

• Use libcurl.
• Rewrite as C-lib.

• Send location to pidiod.
• (Feed) Retrieve cpr based on location configuration.
• Send operator information.