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+## Binding a temperature sensor with an air conditioner outlet (aka, ac partner)
+
+Home Assistant entities generated by xiaomi_home are strictly bound to device IDs. At present, there is no feasible or reliable way to make one entity display data coming from two or more different physical devices.
+
+## Camera video stream
+
+The camera video stream is encrypted using P2P encryption, with the encryption key negotiated between the Mi Home APP and the camera device. xiaomi_home is an untrusted client and cannot negotiate the video encryption key with the device, so it cannot fetch the camera video stream.
+
+## Importing devices from automotive space
+
+Devices within the vehicle interior may impact driving and therefore require higher levels of safety and privacy than ordinary IoT devices. Consequently, such devices shall not be imported into xiaomi_home which is an untrusted client.
+
+## Vacuum robot map
+
+The vacuum robot map is encrypted by a key negotiated between the Mi Home APP and the device, like the camera video stream. xiaomi_home is an untrusted client and cannot negotiate the map encryption key with the vacuum robot, so it cannot fetch the vacuum robot map.
+
+## WiFi speaker conversation history
+
+The conversation history is stored on the WiFi speaker service cloud, not MIoT service cloud, and it cannot be delivered by the MIoT-Spec-V2 protocol message. xiaomi_home can only access MIoT service interfaces by OAuth 2.0 token obtained from the OAuth authorization server. Wifi speaker service interfaces are not accessible with this token.