title: Check device input options (mouse and gyroscope)?
body: <p>I'm working on a game that uses the gyroscope and accelerometer as input.</p>
  
  <p>To test it on my PC I created an option to use the mouse as input, however I want to be able to know whether the device has a gyroscope and a mouse so I can change the controls accordingly. This would be extra useful to make my game multiplatform.</p>
  
  <p>How is this possible in Unity3D?</p>