Compared to some single image stereograms, it&#x27;s pretty easy for me to see the 3D effect either way.  The &quot;straight&quot; view shows the message in front of the rest, cross-eyed it&#x27;s behind.<p>Of course, it&#x27;s not particularly &quot;secure&quot;, there would have to be layers of encryption of some kind if the goal is keeping the message hidden.