diff --git a/whitechapel_pro/debug_camera_app.te b/whitechapel_pro/debug_camera_app.te
index 427a7735..9d7bcd87 100644
--- a/whitechapel_pro/debug_camera_app.te
+++ b/whitechapel_pro/debug_camera_app.te
@@ -1,3 +1,4 @@
+# File containing sepolicies for GCA-Eng & GCA-Next.
 userdebug_or_eng(`
 	# Allows camera app to access the GXP device and properties.
 	allow debug_camera_app gxp_device:chr_file rw_file_perms;
@@ -9,4 +10,7 @@ userdebug_or_eng(`
 	# Allows GCA-Eng to find and access the EdgeTPU.
 	allow debug_camera_app edgetpu_app_service:service_manager find;
 	allow debug_camera_app edgetpu_device:chr_file { getattr read write ioctl map };
+
+	# Allows tachyon_service to communicate with GCA-Eng via binder.
+	binder_call(edgetpu_tachyon_server, debug_camera_app);
 ')
diff --git a/whitechapel_pro/google_camera_app.te b/whitechapel_pro/google_camera_app.te
index 0ef04cc4..a40f433f 100644
--- a/whitechapel_pro/google_camera_app.te
+++ b/whitechapel_pro/google_camera_app.te
@@ -8,3 +8,6 @@ allow google_camera_app vendor_fw_file:dir search;
 # Allows GCA to find and access the EdgeTPU.
 allow google_camera_app edgetpu_app_service:service_manager find;
 allow google_camera_app edgetpu_device:chr_file { getattr read write ioctl map };
+
+# Allows tachyon service to communicate with google_camera_app via binder.
+binder_call(edgetpu_tachyon_server, google_camera_app);