iOS Bluetooth communication does not require authentication MFi

Said to be more than just use Bluetooth 4.0 Bluetooth devices can communicate with Bluetooth ios normal, so what. I would like to ask the hardware side is just an ordinary 4.0 protocol standard can communicate with ios Mody. Just use the built-in Bluetooth library software can be used on it?
Reply:
Well this is the device for as long as it supports BLE, IOS device can be used CoreBluetooth development BLE, (Bluetooth 4.0 (BLE))
Reply:
Can CoreBluetooth