Very effective Method of Detecting REM, Lucidity, and WEC

I have come across a recent study (2009) that shows what looks like a very much working method for detecting the states WEC (Wake Eyes Closed), Lucid, and REM.

Lucid Dreaming: A State of Consciousness with Features of Both Waking and Non-Lucid Dreaming
Ursula Voss, PhD,1 Romain Holzmann, Dr,2 Inka Tuin, MD,3 and J. Allan Hobson, MD4

http://www.ncbi.nlm.nih.gov/pmc/arti...tool=pmcentrez

Now that we know how to accurately detect these 3 states couldn't we build a far more effective device that assists with both the induction of lucidity, automatically stopping induction ques, etc?

Couldn't we make a device where the intensity of cues steps up until the desired state is reached and then stops? Couldn't said device also deliver lucidity reminders if lucidity fades?