diff --git a/Registration-with-captcha.md b/Registration-with-captcha.md
new file mode 100644
index 0000000..f4d5cf6
--- /dev/null
+++ b/Registration-with-captcha.md
@@ -0,0 +1,12 @@
+Sometimes the Signal server requires a captcha token for registering a new account.
+If your IP address is not deemed trustworthy enough, the registration fails with a captcha required error (`Captcha invalid or required for verification`).
+
+To get the token, go to https://signalcaptchas.org/registration/generate.html
+
+After filling the captcha, the site doesn't show the token but redirects to a `signalcaptcha://` url that contains the token. On mobile devices that url is handled by the apps.
+To see the URL you can open the browser developer tools (F12) before completing the captcha.
+
+Check the console in the developer tools for a redirect starting with `signalcaptcha://`
+Everything after `signalcaptcha://` is the captcha token.
+
+Then execute the `register` command again with the `--captcha` argument (https://github.com/AsamK/signal-cli/blob/master/man/signal-cli.1.adoc#register)
\ No newline at end of file