diff --git a/src/routes/events/[event_id]/(pres_mgmt)/session/[session_id]/session_page_menu.svelte b/src/routes/events/[event_id]/(pres_mgmt)/session/[session_id]/session_page_menu.svelte
index eb590223..3e9224a1 100644
--- a/src/routes/events/[event_id]/(pres_mgmt)/session/[session_id]/session_page_menu.svelte
+++ b/src/routes/events/[event_id]/(pres_mgmt)/session/[session_id]/session_page_menu.svelte
@@ -36,6 +36,9 @@
     let show_modal = $state(false);
     let show_help = $state(false);
 
+    // Detect poster sessions so the Launcher link auto-applies kiosk URL params
+    let is_poster = $derived($lq__event_session_obj?.type_code === 'poster');
+
     async function on_toggle(field: string, new_val: boolean) {
         await api.update_ae_obj_v3({
             api_cfg: $ae_api,
@@ -91,6 +94,7 @@
             events__launcher_session_id={$lq__event_session_obj?.event_session_id && $ae_loc.administrator_access
                 ? $lq__event_session_obj?.event_session_id
                 : null}
+            events__launcher_extra_params={is_poster ? 'iframe=true&launcher_menu=hide' : ''}
             events__location_id={$lq__event_session_obj?.event_location_id && $ae_loc.trusted_access
                 ? $lq__event_session_obj?.event_location_id
                 : null}
diff --git a/src/routes/events/ae_comp__events_menu_nav.svelte b/src/routes/events/ae_comp__events_menu_nav.svelte
index 4d6faa1c..3d98a6b5 100644
--- a/src/routes/events/ae_comp__events_menu_nav.svelte
+++ b/src/routes/events/ae_comp__events_menu_nav.svelte
@@ -23,6 +23,7 @@
         events__launcher_session_id?: null | string; // event_session_id to pass to launcher as ?session_id=
         events__session_id?: null | string; // event_session_id — used for "Back to Session" link only
         events__session_search?: boolean; // event_id
+        events__launcher_extra_params?: string; // extra URL params appended to the launcher link (e.g. 'iframe=true&launcher_menu=hide')
     }
 
     let {
@@ -31,6 +32,7 @@
         ae_core = false,
         events__launcher_id = null,
         events__launcher_session_id = null,
+        events__launcher_extra_params = '',
         events__location_id = null,
         events__locations = false,
         events__reports = false,
@@ -41,7 +43,12 @@
 
     // Build launcher URL segments separately so the href template stays simple (avoids ternaries in href attr)
     let launcher_loc_seg = $derived(events__launcher_id ? `/${events__launcher_id}` : '');
-    let launcher_sess_qry = $derived(events__launcher_session_id ? `?session_id=${events__launcher_session_id}` : '');
+    let launcher_sess_qry = $derived.by(() => {
+        const parts: string[] = [];
+        if (events__launcher_session_id) parts.push(`session_id=${events__launcher_session_id}`);
+        if (events__launcher_extra_params) parts.push(events__launcher_extra_params);
+        return parts.length ? `?${parts.join('&')}` : '';
+    });
 </script>
 
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