Screenshot from a checkout terminal at Target (Milford MA). They use game mechanics (scoring / personal leaderboad) to encourage faster checkout times
See the DNA-esque string in the middle?
G = green = fast
R = red = slow(er)
Here's her last 10 check-outs - fast, except for a few random stragglers.. The big "G" is the prob the calculated average-time-per-checkout (last 10?) while total must be all 44 checkouts. I wonder what the 88% stands for...
Girl running the checkout scored a "G" on Chelsa - said the whole thing "makes work feel like a game" :)