Definitions - Filing System
1 preliminary rulingJudgment of 10 Jul 2018, C-25/17 (Jehovan todistajat) 
Article 2(c) of Directive 95/46 must be interpreted as meaning that the concept of a ‘filing system’, referred to by that provision, covers a set of personal data collected in the course of door-to-door preaching, consisting of the names and addresses and other information concerning the persons contacted, if those data are structured according to specific criteria which, in practice, enable them to be easily retrieved for subsequent use. In order for such a set of data to fall within that concept, it is not necessary that they include data sheets, specific lists or other search methods.
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