diff --git a/README.md b/README.md
index 23c59e2ef..8159aac28 100644
--- a/README.md
+++ b/README.md
@@ -95,7 +95,9 @@ does the same (`ln -s /path/to/WoW WoW`, or on Windows a junction, which needs n
 `localhost:3724`, the stock auth port. Point `WOW_HOST` at another (`WOW_HOST=play.example.com`, or
 `play.example.com:5000` for a remapped port), or set it from the Realmlist button on the login
 screen, which remembers it. Credentials go in at the login screen, or set `WOW_USER` and `WOW_PASS`
-to skip it.
+to skip it. A PIN-protected account answers the keypad from `WOW_PIN` (the digits) or
+`WOW_PIN_TOTP` (the authenticator's base32 secret), as
+[`docs/CONTRIBUTING.md`](docs/CONTRIBUTING.md), "Running it unattended", describes.
 
 Settings, screenshots and addons live in `benilla-config/` at the repo root: a 1.12 addon goes in
 `benilla-config/AddOns/`. [`docs/CONTRIBUTING.md`](docs/CONTRIBUTING.md) has the rest, from the