Pseudonimisation. Take the passenger list of an airline company. It contains names, addresses and passport numbers of passengers and their travel history. The file therefore also contains unique data: a passenger can be identified directly by name.

Is Pseudonymised data anonymous?

However, pseudonymisation is effectively only a security measure. It does not change the status of the data as personal data. Recital 26 makes it clear that pseudonymised personal data remains personal data and within the scope of the UK GDPR.

What is pseudonymous data?

Pseudonymous data is information that no longer allows the identification of an individual without additional information and is kept separate from it. In exchange for the lower level of privacy intrusion, the applicable requirements are less stringent.