Amazon is introducing Amazon Go, a new grocery store experience that does away with check out lines completely. The entire process acts like a real-life Amazon website shopping cart and keeps an on-going tab of things you pick up in the cart until you walk out of the store. No need to pause at a register. Just walk out and go.
There is currently a beta of this program operating in Seattle, WA at 2131 7th Ave and it is only open to Amazon employees at the moment as they get the program running smoothly. This is going to change my life when it goes full throttle to the public.