George Hotz

George Francis Hotz , alias geohot, is an American hacker known for unlocking the iPhone, allowing the phone to be used with other wireless carriers, contrary to ATampTs and Apples intentions. He developed the limera1n jailbreak tool and bootrom exploit for iOS. He is also noted for his technical efforts and publicity with reverse engineering the PlayStationvideo game console, and for subsequently being sued by and settling with Sony. As of September 2015, he is working on his vehicle automation machine learning company comma.ai.

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Source: Wikipedia