diff --git a/app/composables/checkSession.ts b/app/composables/checkSession.ts
new file mode 100644
index 0000000..32c6d3c
--- /dev/null
+++ b/app/composables/checkSession.ts
@@ -0,0 +1,7 @@
+export function checkSession() {
+    const sessionid = useRoute().query.sessionid
+    if (!sessionid) {
+        navigateTo('/')
+    }
+    return sessionid
+}