http://www.gamespot.com/articles/game-g ... 0-6419946/
here are the interesting bits:
Gallizzi may have found a way to bring Game Genie to PlayStation 4 thanks to a security loophole in the PS4's design. "The key to the PlayStation 4 is the Vita," he explained, "and the Vita is not as secure as people think."
The key to the PlayStation 4 is the Vita," he explained, "and the Vita is not as secure as people think. By syncing the Vita to the PS4, we are then able to pick up a hidden Wi-Fi signal to detect a backdoor entry to the system. From there, we're able to access the raw game files, like trophy data and partially encrypted game saves. It still needs work, but the ultimate goal is to be able to mod a game file or the actual PUP files while the game is running--similar to DEX modding for the PS3, which allows real-time memory hacks."
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