1 files changed, 6 insertions, 1 deletions
diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardAbsKeyInputView.java b/packages/SystemUI/src/com/android/keyguard/KeyguardAbsKeyInputView.java
index 00cd5a7b1689..48b413456755 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardAbsKeyInputView.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardAbsKeyInputView.java
@@ -246,7 +246,12 @@ public abstract class KeyguardAbsKeyInputView extends LinearLayout
 
     @Override
     public boolean onKeyDown(int keyCode, KeyEvent event) {
-        onUserInput();
+        // Fingerprint sensor sends a KeyEvent.KEYCODE_UNKNOWN.
+        // We don't want to consider it valid user input because the UI
+        // will already respond to the event.
+        if (keyCode != KeyEvent.KEYCODE_UNKNOWN) {
+            onUserInput();
+        }
         return false;
     }