This extension is supported by GameMaker Studio 2 contact me at firstname.lastname@example.org if you have doubts or problems
Bluetooth for Android
Now you can make bluetooth connections between your android devices to make multiplayer games in GameMaker:Studio!!
Also you can make bluetooth connections with electronic devices as HC-06 which make it ideal to use it with arduino or any other microcontroller.
Test .APK and check Documentation here: https://drive.google.com/open?id=0B098RnWKEU5lTVo3bVNZM0ZPTFU