krpano currently provides locking the screen orientation only in the WebVR plugin (enabled by default, but only usable in the browsers where the browser APIs are supported): https://krpano.com/plugins/webvr/#mobilevr_orientationlock
I thought I could make a responsible, « mobile » variant of my web site which works thanks to the KRPano (http://www.annecypanoramique.com). On iPhone, a part of screen always remains reserved for its menu. According to the model, and the orientation, it is allways a different part of the screen. Locking the orientation in « portrait » mode for all "mobile" devices would make the design possible. Best regards, Hubert