I've got Grocy set up with Barcode Buddy for my pantry. When I bring staples in from the store, I scan them into the pantry. I have a scanner set up at the pantry for convenience. Then when you consume a product, you scan it out of inventory via a scanner in the kitchen. That way, if I am grocery shopping, and there is a killer deal on a 100 lb sack of rice, sugar, flour, etc, I can check inventory and see if I need to restock. It's very handy and there are other aspects of Grocy, but I only use it for the pantry.