In addition, it can be important to record responsibility and custodianship. Within the laboratory it is common to record who is responsible for an individual sample (or item), as well as where it physically is at a specific time.
For example, lab staff might take a sample out of the Biobank, taking personal responsibility for it while they perform various analytical tests before they return it to storage.
Similarly, especially in Biobanks, custodians are often associated with samples or collections. A custodian has overall responsibility for the security, access to, and ethical use of samples under their control.