Ideas I had: Either the text color could be different or the field could be highlighted for any changes. You could may have someone do what we called “second person verification” of the change, then the text could return to a normal color showing it had been verified and approved. You could collect changes in a log with text describing the change, timestamp, and person’s name who made the change. Finally, if all the data gets corrupted, maybe have a “restore” feature to retrieve and restore all the data from a previous recent backup.