diff --git a/AGENTS.md b/AGENTS.md
index 7b1d028..3d31459 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -54,3 +54,4 @@ Face ID > Enrolled**, trigger an IronStorage unlock, then choose **Matching
 Face**. Verify the app changes from locked to unlocked. Use **Non-matching
 Face** to test rejection, and clear **Enrolled** to test unavailable or changed
 biometric enrollment.
+Always tap the entry's **Unlock** control before **Features > Face ID > Matching Face**; a simulated match does nothing without an active authentication request.