iOS USB HID programming

Question

I am trying to make some code regarding USB HID devices. I have found an article about Bluetooth programming which uses Game Kit Framework.

Now I'm looking for some tutorial or maybe some code to work on connecting HID device via USB. Where should I look? Is Game Kit the right way? Is it difficult to implement communication between iOS and HID device?

Answer 1

Actually I just found out that you can develop for external devices with MFi program. It's nicely described here. Also some technical info in Apple's documentation.

But I don't really know what that means... ?