I had this idea. I don't know if it's doable because I don't know much about computers.

The idea is, people could sleep at night with a webcam pointing at their face or eye. People online could watch them sleeping and spot when they go into REM and send some kind of signal - maybe they'd just talk or call their phone or something.

If it could work through Dreamviews you could have people agreeing to do a "shift" - they'd watch others for an hour or so and signal when they go into REM sleep.

Be a lot cheaper than a NovaDreamer.