I worked at the cash register in Hollister in 2006 and we were already getting graded based on how fast and accurate our checkouts were. If you were an 'A' you could process returns without getting a manager's permission. Checkout employees being graded isn't a new thing at all, nor did it come from this gamification trend.
Speaking of cash registers, I have an anecdote that shows you don't have to actually look at the data as a manager, just publish it.
More than 20 years ago a giant poster at a grocery store I worked at as a student, displayed the delta between a cash registers contents and the computers theory of how much cash was there, per cashier. With the obvious implication a large string of large negatives would be detected. So nobody swiped cash out of the register, they're looking too closely.
The act of generating the data and publishing it was enough to get the result without ever taking action. I would imagine there are enterprise level gamification implications here. Put the call center stats on the big screen for all to see and the mgmt can simply ignore the stats, more or less, assuming the employees fall for it.
