George Hotz, 17, confirmed today that he had unlocked an iPhone and was using it on T-Mobile's network, the only major U.S. carrier apart from AT&T that is compatible with the iPhone's cellular technology...

...The hack, which Hotz posted Thursday to his blog, is complicated and requires skill with both soldering and software. It takes about two hours to perform. Since the details are public, it seems likely that a small industry may spring up to buy U.S. iPhones, unlock them and send them overseas.

"That's exactly, like, what I don't want," Hotz said. "I don't want people making money off this."

...Hotz collaborated online with four other people, two of them in Russia, to develop the unlocking process...