Update app/lib/apps/sign/sign.dart

Co-authored-by: AhmedHanafy725 <41957921+AhmedHanafy725@users.noreply.github.com>

Author: AlaaElattar

app/lib/apps/sign/sign.dart

@@ -32,7 +32,7 @@ class Sign implements App {
 
   @override
   bool pinRequired() {
-    return false;
+    return true;
   }
 
   @override