SecurityException when accessing Bluetooth API

Yeah, just found that out as well. However, your change might get overwritten when you update the package.

You can use the following script, which will re-add the bluetooth permission to the manifest. Just put it into a folder called "Editor", then it will run after the OculusBuildProcessor:

using System.Xml;
using UnityEditor;
using UnityEditor.Android;
using UnityEditor.XR.Oculus;

#if UNITY_ANDROID
internal class OculusManifestBTFixer : IPostGenerateGradleAndroidProject {
    static readonly string k_AndroidURI = "http://schemas.android.com/apk/res/android";
    static readonly string k_AndroidManifestPath = "/src/main/AndroidManifest.xml";

    void CreateNameValueElementsInTag(XmlDocument doc, string parentPath, string tag,
        string firstName, string firstValue, string secondName = null, string secondValue = null, string thirdName = null, string thirdValue = null) {
        var xmlNodeList = doc.SelectNodes(parentPath + "/" + tag);

        // don't create if the firstValue matches
        foreach (XmlNode node in xmlNodeList) {
            foreach (XmlAttribute attrib in node.Attributes) {
                if (attrib.Value == firstValue) {
                    return;
                }
            }
        }

        XmlElement childElement = doc.CreateElement(tag);
        childElement.SetAttribute(firstName, k_AndroidURI, firstValue);

        if (secondValue != null) {
            childElement.SetAttribute(secondName, k_AndroidURI, secondValue);
        }

        if (thirdValue != null) {
            childElement.SetAttribute(thirdName, k_AndroidURI, thirdValue);
        }

        var xmlParentNode = doc.SelectSingleNode(parentPath);

        if (xmlParentNode != null) {
            xmlParentNode.AppendChild(childElement);
        }
    }

    public void OnPostGenerateGradleAndroidProject(string path) {
        if (!OculusBuildTools.OculusLoaderPresentInSettingsForBuildTarget(BuildTargetGroup.Android))
            return;

        var manifestPath = path + k_AndroidManifestPath;
        var manifestDoc = new XmlDocument();
        manifestDoc.Load(manifestPath);

        string nodePath = "/manifest";
        CreateNameValueElementsInTag(manifestDoc, nodePath, "uses-permission", "name", "android.permission.BLUETOOTH");

        manifestDoc.Save(manifestPath);
    }

    public int callbackOrder { get { return 20000; } }
}
#endif