Eureka

    I've found it!  The perfect gadget---GeniCan.  It attaches to your garbage can and will scan the barcode of items thrown into the trash can. AND, it will automatically add it to the shopping list on your phone.  So you need never run out of ketchup, for example. I would be on it in a minute, but I don't know how to deal with about the 30 or so individual ketchup packets in my fridge.