Yeah, I used to joke that I wasn't being paid enough for the brain cells I was using to memorize such minutiae. RFID would certainly be one workable approach.

Yeah, I used to joke that I wasn't being paid enough for the brain cells I was using to memorize such minutiae. RFID would certainly be one workable approach. I'm still surprised that Amazon hasn't just chosen to pre-package everything in their warehouses, then do the stacking in such a way that a picker (or robot) is told which row/column a given product of a box is in. But, I guess that gets back to OP's observation on the expense of warehouse space/real estate.