I’m in Portugal at the moment and went to their version of Target using Sensei [1] technology. I was with my little one who was grabbing things off the shelves while I put them back, and I was using a stroller not a store cart. The system worked flawlessly including consumed cafe purchases (coffee, pastry, and bread) along with per kg fruits and vegetables. One of the odd benefits is that I felt a bit safer with my little one roaming freely as I knew he was being carefully watched.
Those cameras are not there for the benefit of your toddler.
How can some big corp. recording and processing what he does possibly make you feel a bit safer?