New Zealand brought its three-strikes law into force in September 2011 under the provisions of the Copyright (Infringing File Sharing) Amendment Act. The Act provides a mechanism for copyright owners to issue warnings, via ISPs, to internet account holders accused of illegally sharing copyright files – in particular, by way of file sharing software such as BitTorrent. ISPs have vocally objected to having to deliver the message to their customers on behalf of copyright owners. Copyright owners have also objected to the NZ$25 ($21) fee they have to pay to the ISPs.