I thought so, top, at least initially. However, it sounds like the out sourced cashiers essentially tallied up the orders after the customer left and sent the bill. How much correction had to be applied to the automation remains to be seen. The biggest issue with systems like this is tracking between scenes and angles. It could be the humans in the loop were there to resync the metadata of each tracked object (i.e., customer) as they moved isle to isle or they removed a jacket or whatever.