The patient registration system handles the pairing of a patient, an operator and an apparatus at a given location at a given time interval.
This is necessary in order to correctly store the produced data in a way that makes it possible to retrieve it at a later point in time, for further analysis.
The system consists of five basic units:

1. A system A is used by a nurse that binds the patient with an UID, for the day.
2. The Pidiod¹⁾ server that stores the mapping of a location with patient and operator IDs (through UIDs).
3. The Pidio²⁾ client that tells the Pidiod server to connect a patient or operator ID with its location ID (through UIDs).
4. The Feed data retrieval client that makes the actual apparatus communication.
5. The Artefact data server.

The system works in the following steps:

• The patient arrives.
• The patient identifies him or herself at the desk, by patient ID.
• The patient ID is connected with an UID in the Pidiod server, using A.
• The patient is given a RFID tag containing that UID.
• The patient is sat down in front of an apparatus.
• The operator identifies him or herself to the Pidio client (by using a similar UID).
• The patient identifies him or herself to the Pidio client.
• The operator performs the measurement at the apparatus.
• The apparatus somehow sends its data to the Feed data retrieval client.
• The Feed data retrieval client sends its preconfigured location ID to the Pidiod server.
• The Pidiod server responds with the patient and operator ID.
• The Feed data retrieval client sends the retrieved data, alongside the preconfigured apparatus ID, the newly retrieved patient and operator IDs, a timestamp and its preconfigured location ID, to the Artefact dataserver.
• … further treatment is taken …
• The patient optionally returns the RFID tag when leaving.