Basically theres this new lucid dream device that detects rapid eye movement and it blinks red but dosent wake u up. If u've heard of it let me know if it works. Here are some links to them.

REM-Dreamer - Lucid Dream Induction Device*

The NovaDreamer Lucid Dream Induction Device

http://www.techchee.com/wp-content/u...ine-180608.jpg