There are a few considerations here that realistically prohibit this. It's possible to do so in an iOS homescreen app via the cache manifest or JavaScript, but our focus is the mobile browsers rather than homescreen app mode.
Additionally, if it was locked in portrait mode using a JavaScript solution, it would be forced for all devices and contexts, regardless of their optimal orientation or user preferences.
There are a few considerations here that realistically prohibit this. It's possible to do so in an iOS homescreen app via the cache manifest or JavaScript, but our focus is the mobile browsers rather than homescreen app mode.
Additionally, if it was locked in portrait mode using a JavaScript solution, it would be forced for all devices and contexts, regardless of their optimal orientation or user preferences.