1. The data subject shall have the right to obtain from the controller the blocking of data where:
(a) their accuracy is contested by the data subject, for a period enabling the controller to verify the accuracy, including the completeness, of the data, or;
(b) the controller no longer needs them for the accomplishment of its tasks but they have to be maintained for purposes of proof, or;
(c) the processing is unlawful and the data subject opposes their erasure and demands their blocking instead.
2. In automated filing systems blocking shall in principle be ensured by technical means. The fact that the personal data are blocked shall be indicated in the system in such a way that it becomes clear that the personal data may not be used.
3. Personal data blocked pursuant to this Article shall, with the exception of their storage, only be processed for purposes of proof, or with the data subject's consent, or for the protection of the rights of a third party.
4. The data subject who r