Underground Bicycle Parking Systems in Japan

Thats not entirely true - in Tokyo at least there is a tiny amount of petty crime, with the exception of bike theft. It's not unusual at all to 'borrow' someones bike (normally of the mama-chari or basket variety) to get home after a night on the town. I knew of three going (owned by various friends) in the space of three years. The best place to look for it is nearest local station.

Organised bike theft was non-existent on the scale it is here through.

Was told as such but then people don't even lock there?