Chapter 15 engages the documentation of chain of custody for electronic/digital evidence. To authenticate evidence for admissibility, you must prove that the collection process was sound and devoid of tampering. The most effective way to do this is to maintain a documented chain of custody. This chapter is concerned with the documentation that must be maintained throughout the life of the evidence and which must be readily available for review at any time and also ensuring that every instance of contact with data must be documented throughout the entire discovery process.