I’m working on a design that needs to be tracked when it is produced over a few year’s range. We are looking at low cost ways of doing this at the component stage opposed to the board stage since PCBs will be produced in larger batches ahead of when the components are placed.
Ideally it wouldn’t require different board revisions or different pick and place information. Although we will look at anything to start with.
With so many parts being hard to purchase (caps mostly), we want to be able to correlate which parts are on which board. We will be getting new BOMs from the fab house when a subsitution is made, but that doesn’t help us identify later down the line what board has what parts on it.
Hopefully this makes sense and thanks!