The techniques of this disclosure ensure user privacy when a user device with a camera is operated by a secondary user. Face detection and recognition are used, with user permission and consent, when a camera application of the device is in use. When it is detected that the device is being operated by a user other than the primary user, e.g., the device’s owner, enhanced security and/or privacy features are automatically enabled on the device. Using the techniques disclosed herein, faces within the viewfinder of a camera application are detected. If a face is recognized as that of the device owner while operating a rear camera of the device is in use, enhanced security and/or privacy features are enabled. Such features include filtering incoming system notifications, suppressing or obscuring other device or application alerts, limiting device usage to only the mobile camera application, etc.
Sharifi, Matthew and Foerster, Jakob, "Automatic information protection when device camera is operated by secondary user", Technical Disclosure Commons, (November 14, 2017)