Personal data is masked using a code to make it harder to trace it back to the individual, without the correct authorisation reveal the data. For example, a blood sample is labelled with a code, and only the doctor can work out who the blood came from by checking the code against a database.
- Data can be processed without revealing who it relates to
- If it gets lost it can’t be traced back to the individual
- Large collections of pseudo-anonymous data can be de-anonymised, making it possible to identify people. In some cases differential privacy is recommended.
Labels that include a unique code without name or address of the person who submitted the sample
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