From what I have read, it includes leaving for the day, lunch and/or dinner, and required rest breaks, if they leave the store carrying a bag of any type. That might be four times leaving the store. . . times five to six work days. So now divide that 10-15 minutes per day by four. . . and you are looking at 4 to 7 minutes per check of multiple employees as they wait in line at end of day and perhaps a bit less, say 2 to 4 minutes, for individuals finding a manager to check them leaving for breaks or lunch/dinner. Now add lawsuit factual puffery.
Okay, that makes sense then. A bunch of checks at even a minute each plus any time standing in line, yeah, I can see that.
I had to do that (long ago in another lifetime, it seems) and the clear-bag thing and all that...