RFID technology can scan an entire basket of goods in less than 2 seconds. Pair that with automatic payment from your smart phone and that eliminates the cashier altogether. This is what’s coming.
Of course you will have to bag your own groceries, unless you bag them while shopping.
I often pay cash-—NO CELL PHONE & I refuse to get one.
Not RFID! Digital Watermarking or the invisible barcode. https://www.youtube.com/watch?v=l99f0mWTelA