RRIDs, or Research Resource IDentifiers, are standard identifier numbers for research resources such as the exact equipment used for spectrometry or chromatography; custom biological agents like cell lines or antibodies; the version of software used; and so on. RRIDs are a little different from the other PIDs in this list because they only apply to some research. However, they cover a wide range of tools and resources and are growing. So everyone should check Scicrunch's RRID database, or determine if there are specific resource identifiers that can help you authenticate your research processes more accurately.
Authentication plans are a supplementary document requested in NIH research funding proposals. Studies using highly-variable agents or tools, should include a brief discussion for how they will authenticate those agents or tools in an Authentication Plan. The NIH's 2017 Authentication Plan reminder states things that should be addressed in planning how you will authenticate key resources, as well as things that are not considered key resources and should not be addressed.
Using RRIDs is one step that you could take towards authentication of resources. Read the notice and related links for ideas, do's, and don't's.