I saw the SNES controller add-on for the Ipod, and was wondering if it would be possible to do the same thing with an Xbox 360 controller. With the emergence of decent gaming on the Ipod, a controller would be helpful, like in the Ipod version of COD: Zombies. Im thinking that if you could split the controller in half and attach a USB to transfer the information to the ipod and have some kind of program installed on the ipod to interpret the presses, just like on a computer, it might be possible. If anybody has any experience or ideas, they would be appreciated.

It could probably be done, especially if you could have it transmit wirelessly.

I assume you are meaning an iPod Touch?

It'd be kinda hard to use though. Not as ergonomic.

You can't just attach a 360 controller (or any USB peripheral) to an iPod/iPod touch/iPhone. They only support peripheral mode, and in a USB connection, one device must always be the host.

It's easy to communicate with a 360 controller via PC (or any other USB host) -- the problem is the reverse, trying to be a 360 controller when attached to an Xbox 360, because the console has security checks over the USB protocol to make sure that the attached peripheral is a licensed Microsoft accessory (like a 360 controller).

The best you can hope for is custom code on the iPod/iPhone/iPod touch that communicates with an Arduino or some other USB-host-capable device (which is then connected to the controller), but I doubt you're ever going to get that to work with official games.

Unless of course I'm missing something, which is why I asked what "SNES controller add-on" you're referring to.

Doesn't the iPod Touch also have a special USB port where nothing else than the cable that comes with the iPod Touch can fit?

It's called a dock connector, yes. But that cable is just a standard USB cable, the other end of which can be adapted to whatever you need.