Now I'll probably lose my admission to the world hackers' community, however, I'm gonna tell you. You need a hardware engineer and a software engineer. The hardware engineer takes the phone apart and it [sic] copies the instruction set, which is the iOS and applications [sic] and your memory, and then you run a piece, a program called a disassembler which takes all the ones and zeroes and gives you readable instructions. Then, the coder sits down and he reads through, and what he's looking for is the first access to the keypad, because that's the first thing you're doing when you input your pad. It'll take half an hour. When you see that, then you reads the instruction for where in memory this secret code is stored. It is that trivial. A half an hour.
"Yeah, that technique might work for the DOS version of Leisure Suit Larry. Not for an iPhone."