Identifiers, known as persistent identifiers (PIDs), are permanent references to a digital object (document, file, website, etc.), a person or an organisation. They make it easier to link and find publications and research results and link authors with their works.

Whether you require workshops on the use of ORCID iD or the seamless system integration of DOIs or Ringgold in the background: TU Wien Bibliothek supports you in making your research visible.

Identifiers for persons: ORCID iD

The Open Researcher Contributor Identification Initiative (ORCID) iD is an alphanumeric identifier for you as a researcher. It identifies you uniquely and makes it easier for you to connect with different activities in the research process. Around 7 million academics around the world are currently using ORCID.


  • is particularly helpful in differentiating between researchers with identical or very similar names,
  • facilitates the assignment of research results when people move between institutions,
  • makes your research results easier to find (for potential research funding bodies, conference organisers, publishing houses, etc.).

Unlike other identifiers (for instance Scopus ID, ResearcherID, arXiv Author ID), ORCID is not tied to a publishing house or a repository. Any researcher can create their own ORCID iD and link it to various platforms and organisations.

ORCID considers data protection to be of paramount importance. As a researcher, you are always in control of which private information you wish to make visible to the public.

Personally on the website: ORCID, opens an external URL in a new window.

The "Name", "Email address" and "Password" fields are required for registration. You also need to select your desired visibility settings for the ORCID record. After registering, you will receive an email to verify your email address.

  1. Go to TISS and log in.
  2. Under Research, go to Settings > ORCID iD settings.
  3. Click on "Create or connect your ORCID iD".
  4. Authorise the connection.
  5. After linking TISS and ORCID, you can synchronise your data (country and employment).

If you don't yet have an ORCID iD, you can also register directly via TISS. After connecting TISS and ORCID, your ORCID iD is also visible on your TISS business card.

To find out more about the data protection aspects of TISS and ORCID, please read the data privacy statement, opens an external URL in a new window.


The ORCID system communicates with other systems, such as the Scopus, Web of Science or PubMED databases, DOI providers, such as DataCite or Crossref and search engines for academic open access documents, such as BASE or Redalyc.

The ORCID system also offers an automated collection of information from these systems and aggregation into the ORCID records. You can find this functionality under "Work > Add Works > Search&Link". If you set this option to active, your ORCID record will be updated automatically. Each time your ORCID record is updated, you will receive a message with information about the changes.

You can also enter the information manually or use the document's persistent identifier to assign the information by clicking on the bibliographic information directly in your ORCID record.


Identifiers for research results: DOI

A Digital Object Identifier (DOI) is a unique and permanent digital identifier for an object (e.g. an academic publication, a data record or work of art).

  • A DOI enables data to be cited.
  • It ensures long-term archiving, access and retrieval.
  • The most important metadata are stored.
  • A DOI makes it easier to link data with the associated academic resources (e.g. publications, software).

Since July 2020, we have been registering DOIs for all documents uploaded into the TU Wien institutional repository, reposiTUm. A DOI is assigned to books, conference proceedings, dissertations and publication series published by TU Wien Academic Press, as well as articles in TU Wien open access journals.

The “Directive for registering Digital Object Identifiers (DOIs) at TU Wien, opens an external URL in a new window” also enables agreements to be concluded between the library and employees of TU Wien, who run trustworthy technical systems or platforms.

A DOI is ideal for any type of resource that fulfils the following criteria.

  • The resources are research results that can be cited.
  • The resources are made accessible (if necessary, also with restricted access).
  • The resources are permanently available.
  • The resources have the key descriptive meta data (such as title, author, or year of publication).

A DOI is ideal for any type of resource that satisfies these criteria and thus also for software, computer models, and more.

For other Austrian universities, research institutions, funding institutions and non-profit organisations, TU Wien Bibliothek runs the DOI Service Austria.

The "Directive for registering Digital Object Identifiers (DOIs) at TU Wien, opens an external URL in a new window” states that TU Wien Bibliothek is the  institution responsible for registering DOIs at TU Wien.  TU Wien Bibliothek assigns DOIs to records in reposiTUm, TU Wien Academic Press, TU Wien open access journals and other technical systems run by TU Wien members that fulfil the requirements set out in the directive.


Handle identifies digital content to make it findable, independently of the server the object is stored on. Unlike URLs, the Handle remains stable. The Handle system is therefore used by many higher-level systems such as DOI. For citable academic records, DOI is recommended as a rule. As DOI and Handle are based on the same infrastructure, interoperability between these identifiers is guaranteed.

TU Wien Bibliothek assigns prefixes for Handles centrally for TU Wien. Contact us with any questions about which identifier is best suited to your requirements.

Identifiers for institutions: PID

As with researchers' names, it can be difficult to distinguish between professional affiliations. This is because the research organisation's name can be in different languages, in its long form or in the form of an abbreviation, or in the form of a subunit of a larger organisation (e.g. Technische Universität Wien, TU Wien). This makes it difficult to identify the organisation and to assess its academic output.

To avoid variations in names and to enable recognition of the institution, with its academic output, persistent identifiers are specified for institutions. The metadata associated with the PID includes the official name of the institution and any variations, the type of institution, geolocation and more. 

TU Wien has the following identifiers as an organisation:

For more information, see the "Directive on naming TU Wien in publications , opens an external URL in a new window".