How to stop certain gameobjects from interacting with triggers

Questions & Answers
1

I’m having a problem with my Item Pick up script where the trigger collider activates on every single gameobject it hits, this is a problem because it stops the player from picking up other game objects with this script. Is there anyway I can fix this or exclude certain game objects from activating the trigger?

My code:

public class betterPickup : MonoBehaviour
{
    
    public Transform player;
    public Transform playerCam;
    public float throwForce = 500;
    bool hasPlayer = false;
    bool beingCarried = false;
    private bool touchedWall = false;
   
    // Update is called once per frame
    void Update()
    {
        //checks the distance between the object being picked up and the player
        float dist = Vector3.Distance(gameObject.transform.position, player.position);  
        /*if the distance is less than 5 units, the object can be picked up, this is to stop the script from
        selecting of all game objects that use this script*/
        if(dist <= 5f)
        {
            hasPlayer = true; 
        }
        else
        {
            hasPlayer = false; 
        }
        if(hasPlayer && Input.GetKeyDown("e"))
        {
            //if the object can be picked up & the player presses E, the object is parented to the player camera
            //isKinematic is true so the game object doesn't fall down once picked up 
            GetComponent<Rigidbody>().isKinematic = true;
            transform.parent = playerCam;
            beingCarried = true; 
        }
        if (beingCarried)
        {
            if (touchedWall)
            {
                //if the object touches a wall, the player stops carrying the object
                GetComponent<Rigidbody>().isKinematic = false; 
                transform.parent = null;
                beingCarried = false;
                touchedWall = false; 
            }
            if (Input.GetMouseButtonDown(0))
            {
                //throwscript
                
                /*same as touchedWall except we add force to the object via playercam forward speed
                  multiplied by the throwForce so the object go fast*/
                
                //tldr: object go fast if left mouse do clicky clicky
                GetComponent<Rigidbody>().isKinematic = false;
                transform.parent = null;
                beingCarried = false;
                GetComponent<Rigidbody>().AddForce(playerCam.forward * throwForce);
            }
            else if (Input.GetMouseButtonDown(1))
            {
                //drop script
                //right mouse to drop object
                GetComponent<Rigidbody>().isKinematic = false;
                transform.parent = null;
                beingCarried = false;
            }
        }
    }
    void OnTriggerEnter()
    {
        //if the object hits anything, it sets touchedWall to True 
        //trigger is used because disabling isKinematic also disables collision
        if (beingCarried)  
        {
            touchedWall = true;
        }
    }
}
2

There are two different ways that come to mind for me. The first is to assign layers to gameobjects and use Physics.IgnoreCollision() so that the layers that you don’t want to set off triggers ignore each other. Another method you could use is to check the tag of the object that’s causing the trigger. The OnTriggerEnter method actually has a parameter. You can write your OnTriggerEnter() method something like this:

    private void OnTriggerEnter(Collider other)
    {
        // if the object that's colliding/triggering doesn't have this tag, then run this code
        if (beingCarried && other.CompareTag("Your Tag") == false)
        {
            touchedWall = true;
        }
    }