It measures skin resistance and then has special metrics regarding Thetans or clarity.

So one could make one that is even more sensitive, that allows you to practice altering your skin resistance with mind thoughts (roaring ocean waves and salty sea air! Seagulls and warm sun! Sand squishing between your toes!), thereby potentially improving your clarity, or at least improving the measured metrics.

I’m not a Scientologist, but according to some biofeedback enthusiast friends, ASMR might help them game their readings better.