> checking inventory matches sales That's my guess. They wait until the end of the day and see what they have in the store, since that's got to be the easiest

> checking inventory matches sales That's my guess. They wait until the end of the day and see what they have in the store, since that's got to be the easiest of all of this to automate with cameras. Then they see how far off the AI was for the day and work on error correction and send receipts.