@jarekceborski rebuilt CAPTCHA with Jev: the browser measures how a form is filled, the server turns that into plain sentences, and Jev decides person or bot. A blog post with source is said to be in the comments.

Jarek (@jarekceborski) published this on 2026-09-24. @jarekceborski rebuilt CAPTCHA with Jev: the browser measures how a form is filled, the server turns that into plain sentences, and Jev decides person or bot. A blog post with source is said to be in the comments. I rebuilt CAPTCHA with Jev The browser measures how you fill in the form. Server turns that into a few plain sentences, and Jev decides: person or bot. Blog post with source code in the comments: How Jev or TypeSafe is used, in the post's own words: “I rebuilt CAPTCHA with Jev The browser measures how you fill in the form.” The post does not name a separate audience. It is for people reading what @jarekceborski shows here (it includes media).