diff --git a/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl b/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl
index 4b51bb1..3665534 100644
--- a/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl
+++ b/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl
@@ -51,4 +51,5 @@
   android.hardware.biometrics.common.ICancellationSignal authenticateWithContext(in long operationId, in android.hardware.biometrics.common.OperationContext context);
   android.hardware.biometrics.common.ICancellationSignal enrollWithContext(in android.hardware.keymaster.HardwareAuthToken hat, in android.hardware.biometrics.face.EnrollmentType type, in android.hardware.biometrics.face.Feature[] features, in @nullable android.hardware.common.NativeHandle previewSurface, in android.hardware.biometrics.common.OperationContext context);
   android.hardware.biometrics.common.ICancellationSignal detectInteractionWithContext(in android.hardware.biometrics.common.OperationContext context);
+  void onContextChanged(in android.hardware.biometrics.common.OperationContext context);
 }
diff --git a/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl b/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
index bbe3632..a92b366 100644
--- a/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
+++ b/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
@@ -461,4 +461,10 @@
 
     /* See ISession#detectInteraction() */
     ICancellationSignal detectInteractionWithContext(in OperationContext context);
+
+    /**
+     * This may be called while an authenticate, detect interaction, or enrollment operation is
+     * running when the context changes.
+     */
+    void onContextChanged(in OperationContext context);
 }
diff --git a/biometrics/face/aidl/default/Session.cpp b/biometrics/face/aidl/default/Session.cpp
index 9e753e5..984a1a9 100644
--- a/biometrics/face/aidl/default/Session.cpp
+++ b/biometrics/face/aidl/default/Session.cpp
@@ -172,4 +172,8 @@
     return detectInteraction(out);
 }
 
+ndk::ScopedAStatus Session::onContextChanged(const common::OperationContext& /*context*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
 }  // namespace aidl::android::hardware::biometrics::face
diff --git a/biometrics/face/aidl/default/Session.h b/biometrics/face/aidl/default/Session.h
index 0ce9e20..9db17d2 100644
--- a/biometrics/face/aidl/default/Session.h
+++ b/biometrics/face/aidl/default/Session.h
@@ -82,6 +82,8 @@
             const common::OperationContext& context,
             std::shared_ptr<common::ICancellationSignal>* out) override;
 
+    ndk::ScopedAStatus onContextChanged(const common::OperationContext& context) override;
+
   private:
     std::shared_ptr<ISessionCallback> cb_;
     std::mt19937 mRandom;
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/ISession.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/ISession.aidl
index 4e7b3b4..30f299d 100644
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/ISession.aidl
+++ b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/ISession.aidl
@@ -53,4 +53,5 @@
   android.hardware.biometrics.common.ICancellationSignal detectInteractionWithContext(in android.hardware.biometrics.common.OperationContext context);
   void onPointerDownWithContext(in android.hardware.biometrics.fingerprint.PointerContext context);
   void onPointerUpWithContext(in android.hardware.biometrics.fingerprint.PointerContext context);
+  void onContextChanged(in android.hardware.biometrics.common.OperationContext context);
 }
diff --git a/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/ISession.aidl b/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/ISession.aidl
index ea8c6aa..db01145 100644
--- a/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/ISession.aidl
+++ b/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/ISession.aidl
@@ -473,4 +473,10 @@
 
     /** See ISession#onPointerUp(int) */
     void onPointerUpWithContext(in PointerContext context);
+
+    /**
+     * This may be called while an authenticate, detect interaction, or enrollment operation is
+     * running when the context changes.
+     */
+    void onContextChanged(in OperationContext context);
 }
diff --git a/biometrics/fingerprint/aidl/default/Session.cpp b/biometrics/fingerprint/aidl/default/Session.cpp
index 8cbcfc7..452ed12 100644
--- a/biometrics/fingerprint/aidl/default/Session.cpp
+++ b/biometrics/fingerprint/aidl/default/Session.cpp
@@ -270,4 +270,8 @@
     return onPointerUp(context.pointerId);
 }
 
+ndk::ScopedAStatus Session::onContextChanged(const common::OperationContext& /*context*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
 }  // namespace aidl::android::hardware::biometrics::fingerprint
diff --git a/biometrics/fingerprint/aidl/default/include/Session.h b/biometrics/fingerprint/aidl/default/include/Session.h
index 584cb27..acd5def 100644
--- a/biometrics/fingerprint/aidl/default/include/Session.h
+++ b/biometrics/fingerprint/aidl/default/include/Session.h
@@ -95,6 +95,8 @@
 
     ndk::ScopedAStatus onPointerUpWithContext(const PointerContext& context) override;
 
+    ndk::ScopedAStatus onContextChanged(const common::OperationContext& context) override;
+
     bool isClosed();
 
   private: