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Personal data that have been processed so as to make it impossible to know the person with whom the data are associated. Anonymisation of data is especially important for the secondary (non-trial-relate) use of personal health data.
The report calls for three solutions: applying anonymization techniques so that commercial data-miners can share information with authorities without disclosing the identity of individuals or supplying information of non-suspects; building authorization requirements into government systems for viewing data to ensure that only those who need to see the data do; building audit logs into the computing system to identify and track inappropriate access to information and misuses of information.
By employing advanced data security and anonymization strategies and pooling multiple studies associated with the same diagnosis, Project Data Sphere addresses both the legal and technical issues associated with sharing these kinds of data.
Your question raises the issue whether the application of some form of anonymization process to personal data can be considered sufficient to avoid any negative consequence for the individual concerned--and, behind this, whether data protection rules apply.