Pseudonymization
Also known as: pseudonymise
Pseudonymization replaces identifiers with pseudonyms (keys or tokens), so data is usable without exposing the person — but re-identifiable if you hold the key.
- Name → a token; the mapping stored separately.
- Less lossy than full anonymization.
- GDPR explicitly recognizes it as a protective measure.
The balance: pseudonymization keeps data *useful* while reducing risk. Store the key-map securely and separately, and you get utility plus protection.