diff --git a/include/justui/jscene.h b/include/justui/jscene.h
index 95961cb..cb045b6 100644
--- a/include/justui/jscene.h
+++ b/include/justui/jscene.h
@@ -33,6 +33,8 @@ typedef struct {
    uint16_t lost_events;
    /* Whether jscene_run() returns to the main menu */
    bool mainmenu;
+   /* Whether jscene_run() powers off */
+   bool poweroff;
 
 } jscene;
 
@@ -110,6 +112,12 @@ bool jscene_process_event(jscene *scene, jevent event);
    resources before invoking the main menu. */
 void jscene_set_mainmenu(jscene *scene, bool mainmenu);
 
+/* jscene_set_poweroff(): Set whether jscene_run() will poweroff
+   This type of poweroff (SHIFT+AC/ON) doesn't allow return to menu, so the
+   add-in "must" resume after powering on again, however sensitive programs
+   will probably want to save important data before leaving anyway. */
+void jscene_set_poweroff(jscene *scene, bool poweroff);
+
 /* jscene_run(): Run a scene's main loop
 
    This function implements a main control loop that sleeps when there is
diff --git a/src/jscene.c b/src/jscene.c
index f572e09..f66e5d8 100644
--- a/src/jscene.c
+++ b/src/jscene.c
@@ -53,6 +53,7 @@ jscene *jscene_create(int x, int y, int w, int h, void *parent)
 	s->queue_next = 0;
 	s->lost_events = 0;
 	s->mainmenu = true;
+	s->poweroff = true;
 
 	/* Prepare first layout/paint operation */
 	s->widget.dirty = 1;
@@ -225,6 +226,13 @@ jevent jscene_run(jscene *s)
 				continue;
 			}
 		}
+		if(k.type == KEYEV_DOWN && k.key == KEY_ACON && k.shift && !k.alpha) {
+			if(s->poweroff) {
+				gint_poweroff(true);
+				jscene_queue_event(s, (jevent){ .type = JSCENE_PAINT });
+				continue;
+			}
+		}
 		#ifdef FX9860G
 		if(k.type == KEYEV_DOWN && k.key == KEY_OPTN && k.shift && !k.alpha) {
 			t6k11_backlight(-1);