Stratasys-450mc-VR/Assets/Scripts/SimpleBillboard.cs

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class SimpleBillboard : MonoBehaviour
{
    private void Start()
    {
        StartCoroutine(LookAtCamera());
        
        IEnumerator LookAtCamera()
        {
            if (Camera.main == null) yield break;
            Transform targ = Camera.main.transform;
            while (true)
            {
                transform.LookAt(targ);
                yield return null;
            }
        }
    }
}