superglaze writes "UK mobile broadband providers currently have no way of telling which subscribers are file-sharing which copyrighted content, ZDNet UK reports. This represents something of a problem for new laws that have been proposed to crack down on unlawful file-sharing. According to the article, databases (tracking IP address mappings) could be built to make it possible to identify what specific users are downloading, but the industry is loathe to fund this sort of project itself. Also, as an analyst points out in the piece, users of prepaid phone cards are mostly anonymous in the UK, which creates another challenge for the government's plans. And if that isn't enough, connection-sharing apps like JoikuBoost would make identification pretty much impossible anyway."