diff --git a/packages/SystemUI/src/com/android/systemui/classifier/FalsingCollectorImpl.java b/packages/SystemUI/src/com/android/systemui/classifier/FalsingCollectorImpl.java
index 3819e61..4f4f3d0 100644
--- a/packages/SystemUI/src/com/android/systemui/classifier/FalsingCollectorImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/classifier/FalsingCollectorImpl.java
@@ -97,6 +97,14 @@
                 }
             };
 
+    private final KeyguardStateController.Callback mKeyguardStateControllerCallback =
+            new KeyguardStateController.Callback() {
+                @Override
+                public void onKeyguardShowingChanged() {
+                    updateSensorRegistration();
+                }
+            };
+
 
     private final KeyguardUpdateMonitorCallback mKeyguardUpdateCallback =
             new KeyguardUpdateMonitorCallback() {
@@ -176,6 +184,8 @@
         mStatusBarStateController.addCallback(mStatusBarStateListener);
         mState = mStatusBarStateController.getState();
 
+        mKeyguardStateController.addCallback(mKeyguardStateControllerCallback);
+
         mKeyguardUpdateMonitor.registerCallback(mKeyguardUpdateCallback);
 
         mJavaAdapter.alwaysCollectFlow(
@@ -364,6 +374,24 @@
         } else {
             sessionEnd();
         }
+        updateSensorRegistration();
+    }
+
+    private boolean shouldBeRegisteredToSensors() {
+        return mScreenOn
+                && (mState == StatusBarState.KEYGUARD
+                || (mState == StatusBarState.SHADE
+                && mKeyguardStateController.isOccluded()
+                && mKeyguardStateController.isShowing()))
+                && !mShowingAod;
+    }
+
+    private void updateSensorRegistration() {
+        if (shouldBeRegisteredToSensors()) {
+            registerSensors();
+        } else {
+            unregisterSensors();
+        }
     }
 
     private void sessionStart() {
@@ -371,7 +399,6 @@
             logDebug("Starting Session");
             mSessionStarted = true;
             mFalsingDataProvider.setJustUnlockedWithFace(false);
-            registerSensors();
             mFalsingDataProvider.onSessionStarted();
         }
     }
@@ -380,7 +407,6 @@
         if (mSessionStarted) {
             logDebug("Ending Session");
             mSessionStarted = false;
-            unregisterSensors();
             mFalsingDataProvider.onSessionEnd();
         }
     }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/classifier/FalsingCollectorImplTest.java b/packages/SystemUI/tests/src/com/android/systemui/classifier/FalsingCollectorImplTest.java
index 3f13033..45d20dc 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/classifier/FalsingCollectorImplTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/classifier/FalsingCollectorImplTest.java
@@ -188,6 +188,20 @@
     }
 
     @Test
+    public void testRegisterSensor_OccludingActivity() {
+        when(mKeyguardStateController.isOccluded()).thenReturn(true);
+
+        ArgumentCaptor<StatusBarStateController.StateListener> stateListenerArgumentCaptor =
+                ArgumentCaptor.forClass(StatusBarStateController.StateListener.class);
+        verify(mStatusBarStateController).addCallback(stateListenerArgumentCaptor.capture());
+
+        mFalsingCollector.onScreenTurningOn();
+        reset(mProximitySensor);
+        stateListenerArgumentCaptor.getValue().onStateChanged(StatusBarState.SHADE);
+        verify(mProximitySensor).register(any(ThresholdSensor.Listener.class));
+    }
+
+    @Test
     public void testPassThroughGesture() {
         MotionEvent down = MotionEvent.obtain(0, 0, MotionEvent.ACTION_DOWN, 0, 0, 0);
         MotionEvent up = MotionEvent.obtain(0, 0, MotionEvent.ACTION_UP, 0, 0, 0);