Actually, Home depot does haved a device that employees use to locate items in that particular store, as to aisle and bin# its not actually a phone, although that could work I suppose.
To know exactly which bin everything is located is a daunting task and long time employees do know—newer ones barely know which direction to the bathroom so if they are newer employees, I am glad they are looking up where the left handed hammers are—and I even have them take me there—even better!
I agree, local wally world is huge, and they look up my product request and give the correct aisle and location.
Also they are asking the cashiers, not the people in the aisles.
I would bet going back if you pulled this with baby boomers/Xer/Millennial girls when they were at this age they wouldn’t have known either.