Accelerometer

public class Move : MonoBehaviour
{
    public float sensibility = 21;
    public float pc;

    void Update()
    {
        if (gameObject.transform.position.x <= -3)
        {
            gameObject.transform.position = new Vector3(-3, gameObject.transform.position.y, gameObject.transform.position.z);
        }
        if (gameObject.transform.position.x >= 3)
        {
            gameObject.transform.position = new Vector3(3, gameObject.transform.position.y, gameObject.transform.position.z);
        }
        gameObject.transform.position += new Vector3(Input.acceleration.x + pc, 0, 0) * Time.deltaTime * sensibility;
    }
}