A privacy indicator is provided that shows whether sensor data are being processed in a private or non-private mode. When sensor data are used only for controlling a device locally, it may be in a private mode, which may be shown by setting the privacy indicator to a first color. When sensor data are being sent to a remote site, it may be in a non-private mode, which may be shown by setting the privacy indicator to a second color. The privacy mode may be determined by processing a command in accordance with a privacy policy of determining if the command is on a privacy whitelist, blacklist, greylist or is not present in a privacy command library. A non-private command may be blocked.