Does this VirtualHIDDevice support Bluetooth keyboards?

[205g0]

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From the Apple docs and why I ask:

[tekezo]

Karabiner-DriverKit-VirtualHIDDevice is not a driver for actual hardware. So, it does not support both USB and Bluetooth transport.

If you are asking about Karabiner-Elements, it is compatible with both USB and Bluetooth keyboards.

[205g0]

Karabiner-DriverKit-VirtualHIDDevice is not a driver for actual hardware. So, it does not support both USB and Bluetooth transport.

So, I can't remap keys on my keyboard, modify my layout once, impacting both internal and external keyboards, eg. BT, with Apple's DriverKit or this VirtualHIDDevice?

If you are asking about Karabiner-Elements, it is compatible with both USB and Bluetooth keyboards.

How does Karabiner Elements then does this?

[tekezo]

How does Karabiner Elements then does this?

IOKit provides a way to grab events and modify them. (kIOHIDOptionsTypeSeizeDevice) https://github.com/pqrs-org/Karabiner-Elements/blob/master/docs/DEVELOPMENT.md#the-difference-of-event-grabbing-methods

You can use it instead of writing your keyboard driver unless you want to use keys which are not supported generic keyboard driver (e.g., multimedia keys on some third vendor keyboards.)

[205g0]

You can use it instead of writing your keyboard driver

How is the latency of IOKit compared to DriverKit which grabs right the HID data?