I'm not referring to facial recognition. I'm saying if you shoplift, they are going to be able to provide the cops with video evidence, and they will know who you are.
The bigger problem is if they overcharge too many customers. Having to complain afterwards because it lists items you didn't buy eliminates the advantages of faster checkouts.
That's very true. And if they are not confident about their predictions then it might be difficult to push back when people fraudulently claim to not have purchased something.