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Keyboard Scan Code FiltersΒΆ

This setting allows you to create rules that prevent the PCoIP endpoint user from using certain keys or key combinations on their keyboard. Each filter consists of the following options.

  • Scan Codes: Each key that is pressed produces a scan code that represents the key stroke in the form of hexadecimal value with a value range between 04 to FF.

  • Keyboard Layout: You can select the keyboard layout associated with the supported languages available for keyboards connected to PCoIP Zero Clients

  • Lock State: Represents the state of the NUM Lock, Caps Lock, Scroll Lock, and KANA Lock keys. States available are Any/All, Unlocked and Locked.

  • Modifier State: Represents the state of the left and right CTRL, SHIFT, ALT, and GUI (i.e. Windows) keys. The available states are Any/All, Pressed and Depressed. Each key can be further identified by either the left, right or both. For example, LCTRL represents the left CTRL key, while RCTRL represents the right CTRL key and if your rule includes both left and right CTRL keys, you would use BCTRL.

Keyboard property values will be displayed in text on the profile page, and in hexadecimal on the endpoint details page.

Keyboard Scan Filters

Examples of using Keyboard Scan Code Filters with PrtScn

To block a screenshot of the whole screen using PrtScr while allowing a screenshot of the Active Window using Alt+PrtScn.

  • Scan Code: 46
  • Lock State: Any/All
  • Modifier Option: ALT: BALT - Depressed

Keyboard Print Screen Key Rule

Keyboard Print Screen Key Rule

Disable PrtScn for all cases.
This means the filter will filter out any messages whenever PrtScn is pressed, regardless if other keys are pressed.

  • Scan Code: 46
  • Lock State: Any/All
  • Modifier Option: Any/All

Disable PrtScn only when NumLk is in the off state.
This means the filter filters out any messages whenever PrtScn is pressed and NumLk is depressed (not locked).

  • Scan Code: 46
  • Lock State: NUM LOCK - Depressed
  • Modifier Option: Any/All

Disable Ctrl+Alt+PrtScn only.
This means the filter filters out any messages whenever PrtScn is pressed in conjunction with either the left or right Ctrl and Alt keys.

  • Scan Code: 46
  • Lock State: Any/All
  • Modifier Option: BCTRL - Pressed and BALT - Pressed

Disable Ctrl+PrtScn while allowing the use of Ctrl+Alt+PrtScn and Ctrl+Gui+PrtScn.

  • Scan Code: 46
  • Lock State: Any/All
  • Modifier Option: BCTRL - Pressed and BALT - Depressed and BGUI - Depressed