We have one in our local Stop and Shop. It has a creepy smiley face plastered on it. It's easy to say that it's super weird and suspicious, gets in your way, likely not cost-effective (at least for its ostensible purposes, who knows what slimey face tracking or whatever it might be doing), which is all true.

But on a slightly positive note, my kids 5 and 7 love it. They pretend like it's a killer robot chasing us, which it oddly does seem to do. No matter where we go in the store it's always popping up around the corner. They play hide and seek with it, try to surprise it, hunt it down. Good training for Judgement Day. ;)