To avoid such accidents, West Japan Railway this week launched an initiative dubbed the “Fall-from-platform prevention campaign." Automated security cameras have been installed on train platforms at Kyobashi station in Osaka specifically to detect drunk travellers and alert station attendants of their presence.
The cameras will use image analysis to detect passengers that appear like they’re staggering, passed out on benches, or who have remained motionless on the platform for extended periods of time .... http://motherboard.vice.com