Lockdown Features for Standard 8 (Standard 8)
7/8/2014
Review the lockdown features available on your Windows Embedded 8 Standard (Standard 8) device.
Windows Embedded 8 Standard (Standard 8) includes several feature modules that you can add to your image to help protect your embedded device. These features are collectively referred to as lockdown features, and include write filters to help protect your physical media, Keyboard Filter to block undesirable key combinations like Ctrl+Alt+Delete, and Dialog Filter to hide pop-up windows from the device user.
You can download a large-scale technical poster that describes how to add and configure lockdown and branding features to your Standard 8 operating system.
Write Filters
You can use write filters in your embedded system to help protect your physical storage media. Write filters intercept writes to protected volumes and redirect the writes to a virtual overlay that keeps track of changes to the protected volumes.
Standard 8 includes three different write filters: Unified Write Filter (UWF), Enhanced Write Filter (EWF), and File-Based Write Filter (FBWF). UWF is a new feature in Standard 8, and combines the functionality of both EWF and FBWF. EWF and FBWF are included in Standard 8 mainly for backwards compatibility.
For more information about write filters, see Write Filters Overview.
Keyboard Filter
You can use Keyboard Filter to disable undesirable key presses or combinations. For example, you can disable common Windows key combinations like Ctrl+Alt+Delete and Alt+Tab. You can disable any key or key combination. Keyboard Filter has been redesigned for Standard 8, and works with both physical keyboards and Windows 8 on-screen keyboards. Keyboard Filter also detects dynamic layout changes, such as switching from one language set to another, and continues to suppress keys correctly, even if the location of suppressed keys has changed on the keyboard layout.
For more information about Keyboard Filter, see Keyboard Filter Overview.
Dialog Filter
You can use Dialog Filter to block specific pop-up windows and dialog boxes from appearing on the screen. You can specify a default action for Dialog Filter to take for all top level pop-up windows. You can also specify protected processes that are exempt from the default action.
For more information about Dialog Filter, see Dialog Filter Overview.
Gesture Filter
You can use Gesture Filter to disable the new edge gestures available in Windows 8. Gesture Filter enables you to block each of the edge gestures (left, right, bottom, top, and each corner) individually.
For more information about Gesture Filter, see Gesture Filter Overview