private IEnumerator ClosedHandCheckCoroutine()
    {
        while (true)
        {
            yield return closedHandCheckDelay;

            isHandClosed = false;

            if (ControllerSourceManager.Instance.TryGetControllerPose(TrackedHandJoint.Palm, out Vector3 palmPosition, out _))
            {
                //if (ControllerSourceManager.Instance.TryGetControllerPose(TrackedHandJoint.PinkyTip, out Vector3 a, out _))
                //{
                //    isHandClosed = Vector3.Distance(palmPosition, a) < openHandFingersDistance;
                //}

                if (!isHandClosed && ControllerSourceManager.Instance.TryGetControllerPose(TrackedHandJoint.MiddleTip, out Vector3 b, out _))
                {
                    isHandClosed = Vector3.Distance(palmPosition, b) < openHandFingersDistance;
                }

                if (!isHandClosed && ControllerSourceManager.Instance.TryGetControllerPose(TrackedHandJoint.RingTip, out Vector3 c, out _))
                {
                    isHandClosed = Vector3.Distance(palmPosition, c) < openHandFingersDistance;
                }

                if (!isHandClosed && ControllerSourceManager.Instance.TryGetControllerPose(TrackedHandJoint.IndexTip, out Vector3 d, out _))
                {
                    isHandClosed = Vector3.Distance(palmPosition, d) < openHandFingersDistance;
                }
            }
        }
    }