I've observed parking enforcement using a wax stick to mark tire and curb, or pausing to write tickets when already marked and aligned. Probability of the mark

I've observed parking enforcement using a wax stick to mark tire and curb, or pausing to write tickets when already marked and aligned. Probability of the marks remaining and aligning midday next day if the car was gone overnight seems vanishingly small. Low tech, maybe not definitive, but still hard to argue with.