I want to create a android game with unity3d using proximity sensor an I don't know how to access that sensor with java script
1 Answer
There is the GyroDroid (at the time of writing, costs 35$), which enables access to "every single sensor of your Android".
However, I guess you can try to find how to access Android's sensors using mono, if that is the target platform for Unity's Android games, and apply that to your Unity project.