I saw this (or one like this) in action in China at a hospital. There were 15+ windows to line up for the pharmacy and each one had a lot of 10+ people. I was in shock because in the US even 2 people in like would take forever.
The procedure is, you scan your ID at a machine attached to a pillar. The screen tells you which line to line up in. When you get to the front of the line you hand your card to the nurse the medicine comes down a chute.
The line moved fast. I received my medicine in a matter of minutes. Also I paid for the medicine w/ the doctor that prescribed it - so none of this BS about "oh your insurance doesn't cover this, you haven't met your copay" talk that half the pharmacists seems to spend their time with. The doctor told me what to do with it and fielded any questions.