By analyzing a user's keystrokes, it can be revealing to advertisers, banks, universities, and other institutions wishing to track users. Keystroke fingerprinting has raised concerns particularly among Tor users on the Internet. A developer is hoping to see work done on a system-wide solution for anti-keystroke fingerprinting.
A proposal mailed out on Wednesday is hoping to see work done at the kernel level for caching keystrokes and introducing random delays before passing them on to user-space. The other option being explored is hooking it in at the display server level with Wayland or X.Org for introducing these random (tiny) delays on input events. You can read the proposal in full here, which was sent to the Wayland mailing list among other project lists.