Here is what Apple will tell you..." "
Low level technical details from Apple?

MFI is not what you may think. The MFI program will allow limited access to source / sell authorized components that the factory will audit. It is meant to maintain quality control and to protect their bottom line.
We are working with MFI certified factories in Asia. Apple is very tight on what can and cannot be produced for their widgets. Only if Apple grants their blessing can the MFI licensed ODM build the product on our behalf.
As an example, lightning male to male cable is not allowed by their set rules. The sale of the handshake IC inside the magsafe2 hoods is not to be resold as a component, etc.