The FAA approach to something like this would be to incorporate an industry-defined standard by reference (e.g. altimeters "shall meet the standards set forth i

The FAA approach to something like this would be to incorporate an industry-defined standard by reference (e.g. altimeters "shall meet the standards set forth in SAE Aeronautical Standard AS 392C") which has the benefit of requiring that there be a standard component while leaving it up to an industry group to figure out specifically what that component should be. It's not perfect but in cases like this I think it's a better approach than explicitly requiring a particular technology, and it gives industry the freedom (within the constraints of its standards body) to redefine the standard without overly onerous regulatory machinations. I'll note though that new revisions still have to be incorporated by the regulatory body; they aren't automatic.