Sony has sent letters to two U.K. sites, Playstationmods.com and ChannelTechnology.com, selling modchips that let PlayStation2 owners play multi-region DVDs and games bought in the U.S.
Channel Technology's Sony PlayStation2 DVD Multi-Region upgrade is an internal modification for PS2 consoles bought in Europe that use the PAL television standard.
In theory, DVD players will only play DVDs encoded to the same region. But the practice has met such widespread opposition that hacks are readily and cheaply available for most DVD players and many manufacturer now sell multi-region players as a matter of course. --Matt Loney, ZDNet News U.K.