I have thought of a potential reality check technique that should work regardless of what the mind would accept as being either a waking or dreaming experience; IE the mind might accept something as 'normal' while it isn't.

I have a theory, i'm not 100% sure, but the biggest difference between dreaming reality and waking reality, is that the imagination in the waking reality is sepperate, and the dreaming reality is not.

Therefore, visualizing something while doing a reality check, and being able to discern from what you see / experience and what you visualize, should be different.

I am going to experiment with this, but I would like some input from others on the feasibility or if you tried this and share their experiences.