I found information about new LD induction device which is called REM-Dreamer.
This is almost clone of NovaDreamer. It detects REM state and gives cues.
This is polish device, so it’s very cheap - 90$, but they will start selling this device outside Poland since July. I’ve asked about it Mr. Adam Bytof who is polish Stephen Laberge.
This is his page: www.trans.of.pl
NovaDreamer price is 495$ now, so it’s better to start saving now for REM-Dreamer.
Mr. Adam Bytof told me the REM-Dreamer will cost outside Poland around 120$.
P.S. Well, Poles are the best in the world in programming now. They won championship in programming.