@Venrxy I just got an S+ for like $65 havn't had a chance to use it yet, hope the thing is accurate
(for that matter I hope its compatible with phone )

I plan to try to use it with some sort of slaved vibrating bands

where the detector (S+) detects dream and then master device (phone) calls to ankle band(s) or what ever and sends vibration into sleep
maybe have some other devices (like phone itself) play sounds, and also even some sort of device to release scent (associate all these things with being in a dream)

I hope the thing is useful for something but even just graphs could be fun