That's exactly what they do. Calibration ID is cataloged among other things.That's pretty interesting. Wonder if CA catalogs ECU Id's or some dumb crap like that which would prevent that as a solution..
Recently became mandatory for smog inspection stations .. now they have cameras that can be remotely accessed at any time during the smog inspection ( more likely recorded every time ). My smog buddy walked me outside his service bay to tell me this - he believes they could be listening at any time. It's getting harder, near impossible to do an illegal smog.