Following a huge increase in complaints from the music, movie and software industries, the four major Japanese ISP organizations have agreed that they will work with copyright holders to track down copyright infringing file-sharers and disconnect them from the internet.
In 2006, a Japanese ISP decided to plan measures to stop their subscribers using file-sharing software, by tracking their activities and disconnecting them from the Internet.
The plan didn’t come to fruition as the government stepped in and said that such monitoring might have privacy implications.