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+# Emoji CAPTCHA
+
+> 🚨 This is forked from https://github.com/moderent/emoji-captcha and rewrited
+> with [Axum](https://lib.rs/crates/axum) instead
+> [Actix-Web](https://lib.rs/crates/actix-web) (2x perfomance boost in most
+> scenarious unexpected reason)
+
+### A CAPTCHA implementation based on identifying emojis
+
+This was exclusively developed to be used in Telegram, but might be used
+anywhere else.
+
+## Brief Description
+
+1. The client sends an HTTP request to the server.
+
+2. The server returns a generated photo that has 6 emojis inside it, along with:
+
+   - A custom header called `x-emojis` that includes the code points of the six
+     emojis in the photo plus 2 random ones in hex, shuffled, splitted by ";",
+     and the parts of each of them splitted by "-".
+
+   - A custom header called `x-correct-emojis` that only includes the code
+     points of the 6 emojis in the photo.
+
+3. The client displays the photo returned by the server, along with the emojis
+   provided in the `x-emojis` in a way the user can pick them.
+
+4. The client compares the first six emojis that the user picked with
+   `x-correct-emojis`.
+
+## Credits
+
+This wouldn't be possible without the inspirations from the CAPTCHA system at
+[@PyrogramLounge](https://t.me/PyrogramLounge).