Civil servants’ ID numbers are used in various ways for recognition by different government departments. Should it be standardised?
  With regard to the means of processing the ID numbers, no specific restriction is formulated under the existing laws. In general, data controllers, including government departments, should determine on how the data subjects’ ID numbers should be processed based on real-life circumstances and abided by Article 2 and 5 of the Personal Data Protection Act – “General Principle” and “Data Quality” respectively, stating that the personal data processing should be carried out transparently and in strict respect for privacy and for other fundamental rights, freedoms and guarantees enacted in the instruments of international law and the legislation in force; personal data must be processed lawfully and with respect, collected for specified, explicit, legitimate purposes and for purposes directly related to the activity of the controller; and not further processed in a way incompatible with those purposes, as well as adequate, relevant and not excessive in relation to the purposes for which they are collected and/ or further processed, etc.
  In conformity of the principles, the Office holds that ID numbers should not be disclosed whenever it is unnecessary. While disclosure is required, it is feasible to provide incomplete ID numbers as long as the identification can be recognized.