Comments on: Disable or Reassign / Remap Function (fn) Key on Your Keyboard https://aboutdevice.com/disable-or-remap-function-fn-key-on-your-keyboard/ About Device Provides Specification, Review, Comparison, Features, Price of Phones and Computers, How To, General Computer Problem Tutorials, Solution, Education, Tips and Tricks with Videos and Images for faster understanding Sun, 02 Apr 2023 19:42:56 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: Timothy https://aboutdevice.com/disable-or-remap-function-fn-key-on-your-keyboard/#comment-140991 Sun, 02 Apr 2023 19:42:56 +0000 https://latestsolution.com/?p=3177#comment-140991 In reply to Reynolds.

Please where did you face any issue?

]]> By: Reynolds https://aboutdevice.com/disable-or-remap-function-fn-key-on-your-keyboard/#comment-140078 Mon, 27 Mar 2023 16:40:36 +0000 https://latestsolution.com/?p=3177#comment-140078 The post is erroneuos and useless. Its author is a lazy moron stupid clueless writer looking for viewership/traffic.

]]> By: Timothy https://aboutdevice.com/disable-or-remap-function-fn-key-on-your-keyboard/#comment-24592 Tue, 13 Jul 2021 19:17:06 +0000 https://latestsolution.com/?p=3177#comment-24592 In reply to B.

You can, try it out

]]> By: B https://aboutdevice.com/disable-or-remap-function-fn-key-on-your-keyboard/#comment-24410 Sat, 10 Jul 2021 13:07:53 +0000 https://latestsolution.com/?p=3177#comment-24410 I have old style IBM keyboard with duplicate F1-F10 keys – can I map the “duplicates” to do something other than what the traditional F-keys do??

]]> By: Timothy https://aboutdevice.com/disable-or-remap-function-fn-key-on-your-keyboard/#comment-23078 Thu, 17 Jun 2021 20:36:28 +0000 https://latestsolution.com/?p=3177#comment-23078 In reply to yisoon yap.

Thanks for this great input.
Will modify the post. Thanks

]]> By: yisoon yap https://aboutdevice.com/disable-or-remap-function-fn-key-on-your-keyboard/#comment-22911 Wed, 16 Jun 2021 21:34:29 +0000 https://latestsolution.com/?p=3177#comment-22911 What is the Fn Key? Some more detail:
Fn is not a normal keyboard key, such as the modifiers Ctrl, Shift and AltGr. For a standard modifier key, the microcontroller inside the keyboard sends a scancode for the modifier itself, which is then interpreted by the operating system and combined with other simultaneous key-presses. The Fn key is a form of meta-modifier key, in that it causes the operating system to see altered scancodes when other keys on the keyboard are pressed. This allows the keyboard to directly emulate a full-sized keyboard, so the operating system can use standard keymaps designed for a full-sized keyboard. However, because the operating system has no notion of the Fn key, the key can not normally be remapped in software, unlike all other standard keyboard keys.
(Sources – A) highrez forum post likely based on B) wikipedia post)

Why is it Often Seemingly Impossible to Map the Fn Key?

Indeed, keyboard work as follow (values are just examples, behavior is simplified):

Normal keys: send byte 0x00 + key scan code byte
Modifiers (alt/option, control, windows/command and fn): sends modifier scancode byte + key scan code byte
Special keys (like the G15 ones): send standard (like the volume keys) or custom (depend on manufacturer) scancodes
Most “fn” keyboards (apple included) just process the key combination before sending data, so pressing and releasing the fn key will do nothing at all. For example:

Pressing F1 -> Scancode 0x1A -> operating system recognizes as F1 key
Pressing FN and F1 -> Scancode 0x9A -> operating system recognizes as VolumeUp key
Pressing FN -> keyboard microcontroller waits for another key before sending any data

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