Hitachi HF-W100E Instruction Manual page 117

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An example of using a keyboard filter is shown below.

(1) Block [Ctrl] + [Alt] + [Del] / [Windows] +[R] / [Shift] key with predefined key

1. Type "gpedit.msc" in the search field on the [Start] menu to start the Local Group Policy

Editor.

2. From the left side of the display screen, click to Local Computer Policy >

Computer Configuration > Administrative Templates > System> Keyboard Filter >

Security Keys.

3. Double click on Block Secure Desktop (Ctrl + Alt + Del), select Enable and click OK

(Filtering will be effective at this point, it takes several seconds to reflect) .

4. Click to Keyboard Filter > Desktop and Shell Keys.

5. Double-click Block Run Dialog (Windows + R), select Enable, and click OK.

6. Click to Keyboard Filter > Modifier Keys.

7. Double-click Block Shift Keys, select Enable, and click OK.

8. Close the Local Group Policy Editor and check that the key entry you set is blocked.

(2) Block [Windows] + [Home] key with custom key

Many predefined key combinations are provided, but if there are other combinations that

you want to block, you can define custom key combinations.

The following procedure blocks the combination of [Windows] + [Home] key (minimize

inactive windows) combination.

1. Launch Local Group Policy Editor and click to Local Computer Policy > Computer

Configuration > Administrative Templates > System> Keyboard Filter.

2. Double-click Custom Key Filters and select Enable.

3. Click Display in the "Options" window to display a list of custom key combinations to be

blocked (only blank lines are displayed for the first time use).

4. Enter "Windows + Home" in the blank line and add it to the list. If there are other

combinations you want to block, fill in the added blank line and then click OK.

5. Click OK in the "Custom Key Filters" window (filtering will take effect at this point, it

will take several seconds to reflect).

6. Close the Local Group Policy Editor and check that the key entry you set is blocked.

Please refer to Microsoft Software's "Custom Key Filter Configuration (Standard 7 SP1)"

for details on the keys that can be blocked, the keys that can not be blocked, the syntax and

notes in the creation of custom keys.

https://msdn.microsoft.com/en-us/library/hh505883(v=winembedded.60).aspx

4. PRECAUTIONS REGARDING THE OS

4-15

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