What the heck is a meter reader? We don't have gas to the house, we have our own well for water, and the electric company installed "smart meters" ages ago that are read by computer from their main offices so if anyone shows up I definitely know it's a scam.
Even before the smart meters were installed, the old meter readers would stay in their vehicle and aim a laser(??) or something similar from the street at the meter and it would read it from a distance so we never actually had one come to the door.
I see the folks wanting to talk about their religion knocking at the door more than any three others combined - and in our neighborhood that includes trick-or-treaters (none for the last 5+ years)! The kids mainly stick to the well-lit, closely spaced subdivisions. That doesn't prevent me from buying candy, however... Just saying