When data is pseudonymised, each person's name (or other personally identifiable labels) is replaced with a unique anonymous identifier . This may be used when full anonymisation would ber too string. For exampel, we may want to be able to reconnect processed data with an individual, perhaps to warn them of a disease. It is also important when different datasets need to be linked together, we need to be able to tell which records refer to the same individual even if we do not know which actual person is refered to.
Used on pages 202, 502
Also known as pseudonymised, pseudonomised data