Pseudonymisation, as newly defined under GDPR Article 4(5), helps to achieve Functional Separation to enable greater lawful data use and defeat unauthorised re-identification via the Mosaic Effect to help:
Support Lawful Data Repurposing, Sharing and Combining
Overcome Prohibitions Against Special Category Processing
Separate Processing Benefits From Re-Identification Obligations
Maximise the Availability of Lawful Profiling and Digital Marketing
Satisfy Data Protection by Design and by Default Obligations
Reduce the Risk of Data Breach Liability Obligations and Liability
Improve Scalability of Data Protection Impact Assessments
Enable Benefits of Expanded Lawful Processing