Phase-coded multiplexing for volume holographic memories is a promising alternative to conventional addressing methods. We present a first realization of digital data storage by means of phase-coded multiplexing. The system concept, its implementation, and its performance is described. The potential of image processing is demonstrated experimentally. Data encryption of the stored data using an additional random phase key is discussed and experimental results are shown.© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.