Yep, those have been in retail stores forever. In the grocery store I worked in it was specifically for making sure there weren't hazards on the floor (like a b

Yep, those have been in retail stores forever. In the grocery store I worked in it was specifically for making sure there weren't hazards on the floor (like a broken jar that fell from a shelf) that someone could slip on and break their neck. It was required by their insurance.