Just yesterday I was hearing news of how most of the retail giants and lots of smaller retail stores are going out of business due to competition from ecommerce. If that means the end of practices like this, then good riddance.
Consider Amazon Go (https://www.theverge.com/2016/12/5/13842592/amazon-go-new-ca... setting up an account with a store, users enter, grab what they want, and leave. The system of cameras and biometric trackers observing the store figures out after-the-fact what you grabbed and charges it automatically to your account through a sensor fusion including face recognition. That's a level of convenience rivaling ecommerce for things people want to grab by hand (often produce and small items, for example), and it's completely enabled by this category of technology.