Hi, is it standard procedure in Service Discovery of Bluetooth 4.0 and later to first negotiate an authenticated link key and make Service Discovery request over an encrypted channel (with the help of this link key) to the device with the services? Or does the Service Discovery protocol normaly runs before any link key is derived? Kind Regards, Martin -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html