I have a device, more like a headset with mic. Which framework is apt to receive audio from the device in my app and send back another audio? I had reached conclusion on External Accessory framework but then in further research found similiar functionality in Multipeer Connectivity framework. In that case I can skip MFi certification process. Which will be more apt for my purpose? Follow up question: Is there any way around MFi certification for using External Accessory framework?