The technology has existed for decades. Warehouses have been using it for years for inventory control.
Every item in a package has a bar code now and many, if not most, have an RFID chip for inventory control. I expected it to be tied to a subcutaneous chip or card reader, like in the video, but now almost everyone seems to have a smartphone connected to the internet.
We will eventually see shopping just like in the video with no check out, no cash. Just automatic debit from your account as you walk out the door. Of course, there will be a record of ALL of your purchases so you will receive very specifically targeted marketing messages based on your known shopping habits, just as you receive targeted advertising now based on your browsing habits. Except there will be no “Clearing cookies” and a complete record will be kept by someone of everything you buy and everywhere you go.