Although the repository providing intellectual access usually also has physical custody over the materials, this is not always the case. For example, an archives may assume responsibility for long-term intellectual access to electronic records, but the actual electronic data files or systems may continue to reside in the office where they were created and maintained, or they may be held for long-term storage by a unit such as a data library that is able to provide the appropriate technical facilities for storage and remounting. When it is clear that the physical custodian does not provide intellectual access, use to identify the custodian and to designate the intellectual caretaker. When a distinction cannot be made, assume that the custodian of the physical objects also provides intellectual access to them and should be recognized as the .