Is it possible to use the SDK without taking "VR Focus"?

I'm trying to write a simple application, which only needs to find out if the user has the HMD on their head or not. I currently do that with ovr_GetSessionStatus(&session, &status); which requires me to initialize a session. Doing the initialization will make the SDK think that I'm a full VR game that wants to render something to the HMD, which is not the case.

TL;DR Is there some way that I can find out if the user has the HMD on, without actually initializing a VR session?