Results
Checkout job analysis
Table 2 shows the proportion (%) of time spent on each
category of task at each of the checkouts. It shows that
the three most time-consuming tasks were scanning
(20%), packing (18%) and transacting payments (22%),
and they took up 60% of the checkout job. Waiting for
service and customers together accounted for nearly
one-fifth of the job, and transferring bags took up just
10% of the time.