Cleaning Robot: Wal-Mart USA Introduces Automatic Cleaning Robot – Softbank and Brain
Wal-Mart introduces 360 automatic floor cleaning robots by the end of January
Robot with technology from Brain Inc. (Softbank Investment Company)
Brain Corporation: a US start-up company funded by the Softbank Group
According to Blaine, the robot can automatically clean the floor even if there are customers around.
Bloomberg
https://www.bloomberg.co.jp/news/articles/2018-12-05/PJ784F6TTDS101?srnd=cojp-v2