How to make a P2P Unity Android Game

Hi all, sorry if i'm breaking any forum rules but this is the first of many posts so apologies in advance.

I'm trying to make a basic game where a player can use their phone as a controller and another device would receive the inputs from that controller. I've managed to create a basic game in which a car drives around a plane using accelerometer based inputs.

I'm now trying to adapt this to get a second phone to control the car by collecting the accelerometer values from phone A, sending this information via Bluetooth to phone B which would then interpret this input and apply it to control the player in the game world displayed on phone B. Something similar to this (https://vimeo.com/61416263) without the AR and camera and only one phone is the controller, not both.

The problem is I have no idea how to initiate a Bluetooth connection from inside Unity, from the research i've done around the forums people have suggested they created a plugin in the Android Eclipse ADT and imported it into their Unity games but again, I have no knowledge in this area.

I've created a simple chat application in which two people can message each other via Bluetooth using the Android Eclipse ADT and Java code but again, I don't know how to translate this into Unity,(http://developer.android.com/guide/topics/connectivity/bluetooth.html).

I'm trying to create this game for my University project so buying a plugin from the Asset store and using that is out of the question. I'm coding in Java and JavaScript but I have some knowledge of C++ if necessary, for development i'm using the Android Eclipse ADT and a version of Unity 4 Pro at my university.

Any help would be much appreciated, and please do not hesitate to ask for any clarifications, thanks in advance for all of your help