Abstract: A monitoring system that is configured to monitor a property is disclosed. The monitoring system includes a microphone that is configured to detect sound within an area near a door of the property and generate audio data that represents the sound. The monitoring system includes a monitor control unit configured to obtain the audio data generated by the microphone; evaluate one or more characteristics of the audio data; based on evaluating the one or more characteristics of the audio data, determine that the audio data corresponds to a knock event at the door; and in response to determining that the audio data corresponds to a knock event at the door, perform a monitoring system action. The one or more characteristics of the audio data include one or more of a duration, a peak frequency, an amplitude, or a period.

Abstract: Methods and apparatus for extracting information corresponding to a user selected area of a displayed web page are described. A user selected region, e.g., rectangular region, of a displayed web page is identified based on received user input. The elements beneath the user selected region are converted to a raster data URL. An HTML5 image element is created with an src attribute set to the raster data URL and with a low image element opacity property. The created HTML5 image element is added to the web page as an overlay. The web browser's built-in copying functionality can now be used to copy the overlying image element to the clipboard as an image as desired, e.g., using a context menu which enables image MIME type data to be placed on the clipboard.