Google Cardboard Collider

Thanks for the reply. I am using the following script for movement which I found off the internet.

// activate the autowalk function by pull the cardboard trigger, by define a threshold angle // or combine both by selecting both of these options. // The threshold is an value in degree between 0° and 90°. So for example the threshold is // 30°, the player will move when he is looking 31° down to the bottom and he will not move // when the player is looking 29° down to the bottom. This script can easally be configured // in the Unity Inspector.Attach this Script to your CardboardMain-GameObject. If you // haven't the Cardboard Unity SDK, download it from https://developers.google.com/cardboard/unity/download

using UnityEngine; using System.Collections;

public class Autowalk : MonoBehaviour { private const int RIGHT_ANGLE = 90;

 // This variable determinates if the player will move or not 
 private bool isWalking = false;
 
 CardboardHead head = null;
 
 //This is the variable for the player speed
 [Tooltip("With this speed the player will move.")]
 public float speed;
 
 [Tooltip("Activate this checkbox if the player shall move when the Cardboard trigger is pulled.")]
 public bool walkWhenTriggered;
 
 [Tooltip("Activate this checkbox if the player shall move when he looks below the threshold.")]
 public bool walkWhenLookDown;
 
 [Tooltip("This has to be an angle from 0° to 90°")]
 public double thresholdAngle;
 
 [Tooltip("Activate this Checkbox if you want to freeze the y-coordiante for the player. " +
          "For example in the case of you have no collider attached to your CardboardMain-GameObject" +
          "and you want to stay in a fixed level.")]
 public bool freezeYPosition; 
 
 [Tooltip("This is the fixed y-coordinate.")]
 public float yOffset;
 
 void Start () 
 {
     head = Camera.main.GetComponent<StereoController>().Head;
 }
 
 void Update () 
 {
     // Walk when the Cardboard Trigger is used 
     if (walkWhenTriggered && !walkWhenLookDown && !isWalking && Cardboard.SDK.CardboardTriggered) 
     {
         isWalking = true;
     } 
     else if (walkWhenTriggered && !walkWhenLookDown && isWalking && Cardboard.SDK.CardboardTriggered) 
     {
         isWalking = false;
     }
     
     // Walk when player looks below the threshold angle 
     if (walkWhenLookDown && !walkWhenTriggered && !isWalking &&  
         head.transform.eulerAngles.x >= thresholdAngle && 
         head.transform.eulerAngles.x <= RIGHT_ANGLE) 
     {
         isWalking = true;
     } 
     else if (walkWhenLookDown && !walkWhenTriggered && isWalking && 
              (head.transform.eulerAngles.x <= thresholdAngle ||
              head.transform.eulerAngles.x >= RIGHT_ANGLE)) 
     {
         isWalking = false;
     }

     // Walk when the Cardboard trigger is used and the player looks down below the threshold angle
     if (walkWhenLookDown && walkWhenTriggered && !isWalking &&  
         head.transform.eulerAngles.x >= thresholdAngle && 
         Cardboard.SDK.CardboardTriggered &&
         head.transform.eulerAngles.x <= RIGHT_ANGLE) 
     {
         isWalking = true;
     } 
     else if (walkWhenLookDown && walkWhenTriggered && isWalking && 
              head.transform.eulerAngles.x >= thresholdAngle &&
              (Cardboard.SDK.CardboardTriggered ||
              head.transform.eulerAngles.x >= RIGHT_ANGLE)) 
     {
         isWalking = false;
     }

     if (isWalking) 
     {
         Vector3 direction = new Vector3(head.transform.forward.x, 0, head.transform.forward.z).normalized * speed * Time.deltaTime;
         Quaternion rotation = Quaternion.Euler(new Vector3(0, -transform.rotation.eulerAngles.y, 0));
         transform.Translate(rotation * direction);
     }
     
     if(freezeYPosition)
     {
         transform.position = new Vector3(transform.position.x, yOffset, transform.position.z);
     }
 }

}

My coding skills are zero I am afraid to say and this was the best solution for me to move by looking down without having to pay on the asset store. Is there anyway I can get the colliders to work with this script?