Japan is big on technology advancement. From hi-tech toilets, to manufacturing robots, Japan has them all.
The newest one I have encountered is this self-service checkout machine. One just needs to bring his/her groceries to this machine, scan the barcodes, put in some money, or swipe one’s credit card on the proper terminal, and voila! You can check yourself out without having to wait in line. I believe this is in Japanese, for now.