Reading your comment and looking at the proposed solutions, it made me think of an interesting browser plugin, and wonder how it could affect this issue, or if it could even potentially solve it to a certain degree.
Wasavi. It's a plugin to emulate a small vim-like window on top of text-fields. You just Ctrl+Enter and it opens up, and when you save it (like vim with :wq or ZZ) it populates the field beneath it. It's quite interesting. I wonder if taking this approach to the extreme wouldn't make a difference? If all text fields were abstracted from the website and then the text sent in one stream, for all users.
I unfortunately do not possess the knowledge to understand if this is plausible or absurd, but wanted to at least discuss it publicly.
This behavior does also exist for those accustomed to Vimperator, Pentadactyl or It's All Text plugins, but opening your default editor outside of the browser.
Edit 2: Wasavi supports many text input fields (including passwords), and can be configured to be enabled automatically on field focus.
Follow up: I went to one of the proposed websites that demonstrate deanonymization and tried the Wasavi method on their text fields. This is the message I've got:
Wasavi. It's a plugin to emulate a small vim-like window on top of text-fields. You just Ctrl+Enter and it opens up, and when you save it (like vim with :wq or ZZ) it populates the field beneath it. It's quite interesting. I wonder if taking this approach to the extreme wouldn't make a difference? If all text fields were abstracted from the website and then the text sent in one stream, for all users.
I unfortunately do not possess the knowledge to understand if this is plausible or absurd, but wanted to at least discuss it publicly.
Edit: Wasavi on Github: https://github.com/akahuku/wasavi
This behavior does also exist for those accustomed to Vimperator, Pentadactyl or It's All Text plugins, but opening your default editor outside of the browser.
Edit 2: Wasavi supports many text input fields (including passwords), and can be configured to be enabled automatically on field focus.