Kroger quietly take big step to fight retail theft, shoplifting
Walmart and Target have quietly been doing something similar without mentioning fighting against shrink.

One of the biggest challenges facing retailers looking to cut down on shrink due to retail theft and shoplifting is actually knowing what inventory you should have. That seems easy, but it's challenging because inventory by nature moves.
When an item isn't on a shelf, it may be in a customer's cart, or in the back. In some cases, it may have been set aside for curbside pickup or a digital sale.
It's hard to know what's missing from your inventory when you don't track that inventory in real time. If you can do that, you know more or less immediately when something goes missing.