A method of operating a storage means, wherein for writing and storing a storage item to the storage means the storage item to be written and stored—in particular by using the concept and theory of identification—is provided, a encoding process by means of randomization is applied to the storage item to generate and to provide a randomized encoded storage item, and the randomized encoded storage item is written and stored to the storage means. At least a first randomization process is underlying the encoding process and is a randomization process dedicated and assigned to the underlying storage means. The present disclosure further refers to a unit for operating a storage means, to a storage means and to a system for processing data. By having two randomization processes underlying the encoding process, a distinction can be made between a secrecy insuring and secrecy non-ensuring randomization processes.