The lockers usually have surveillance around them.
So you’d go there, open up an empty box and it would be incredibly easy to show who stole it. Plus even if there wasn’t surveillance, you could film yourself opening the slot, which would then show an empty slot.
So yeah, it does make a difference. The package is never left unattended, it’s never “up for grabs” by anyone.
That being said thieving and whatnot is comparatively rare in Finland anyway. We’re #1 in the wallet drop test. edition.cnn.com/travel/…/least-honest-cities