[NorthSpamz]

I can confirm that it works.
I live on university campus and all parcels are delivered to the post room. Collection is also based on ID, the post room clerk scans them. Even with this procedure in place, I was able to DNA several packages over the academic year.

I would link my success rate to the POD, the delivery drivers take a picture of several packages together, so there's no way of telling which parcel is which.