How does one go about to make an Addin Module Safe? (Usable while driving)

I'm implementing the IModuleEvents interface:

namespace StreetDeck
    public interface IModuleEvents
        bool IsSafe();
with this

        #region IModuleEvents Members

        public bool IsSafe()
            return true;
but no success...

(btw. the "module not avail..." message always puts StreetDeck info full screen mode..)