From my trainjng and experience, if any of these processes or functions conflict with a reasonable expectation of privacy it is considered a search by definition. It's said that it's important and considered wether society would recognize that there should be an expectation of privacy within any given set of circumstances, so apparently comman accepted practice within the current context is a factor regardless of constitutional application.

My interpretation would be if any governmental process has to do with an inspection, review, audit, search or investigation, of your persons or property and you feel you have an expectation of privacy than you are protected unless you waive your rights voluntarily, or you are served with legal notice.