Abstract: Detection of unintentional air leaks in a user interface (e.g., mask) of a respiratory therapy system (e.g., a positive air pressure device) is disclosed. One or more sensors (e.g., within a computing device, such as a smartphone) can be moved around relative to the user interface to determine a location and/or intensity of an air leak. The computing device can provide feedback regarding the location and/or intensity of the air leak to facilitate the user locating the air leak, and thus correcting the air leak. In some cases, augmented reality annotations can be overlaid on an image (e.g., live image) of the user wearing the user interface to identify the location of the air leak. The system can automatically detect the type of user interface being used and can provide tailored guidance for reducing the air leaks.

Abstract: Embodiments of the invention relates to tracking changes made to a document, and embedding the changes in the document while limiting access to the embedded changes. A log of the revisions is retained in a revision history, which is stored in an object library of alternative storage. Access to the document with acceptance of the changes is enabled. Markings associated with deletions and additions to the document, the revision history, or an alternative view showing the changes made is limited based upon a security protocol.

Abstract: Embodiments of the invention relates to tracking changes made to a document, and embedding the changes in the document while limiting access to the embedded changes. A log of the revisions is retained in a revision history, which is stored in an object library of alternative storage. Access to the document with acceptance of the changes is enabled. Markings associated with deletions and additions to the document, the revision history, or an alternative view showing the changes made is limited based upon a security protocol.