I want to use only the j and k keys and disable all other keys.

[yasainet]

Hello! Thank you for this amazing app.

As the title suggests, I would like to use only the j and k keys.
I want to disable all other keys.
This is for all sites.

Could you please tell me how to set this up?

I have a condition that makes my hands sweat a lot, so this app is essential for me!
I look forward to continuing to use it.