Dense shelving can have a lot of blindspots, that's one of the reason those Amazon stores are absolutely plastered in ceiling cameras; that being said 700 CCTV

Dense shelving can have a lot of blindspots, that's one of the reason those Amazon stores are absolutely plastered in ceiling cameras; that being said 700 CCTV cameras would probably still end up cheaper than the proprietary robotics system it seems they are using now