Its not a scam. Its not marketed as a mind control device. Its a newer version of devices that have been in use for decades to promote rem sleep and lucid dreaming and to enhance a meditative state. There is much science behind it, although these units are commercially oriented.
I dont use anything like it because I am able to accomplish the same things without tools but not everyone is.
It functions as a tuning device of sorts to alter your level of consciousness. This can also be accomplished with a drum and deliberate fluctuating rythms. It also is like a beacon that will notify you of changes in your level of consciousness.
Seems pretty awkward and intrusive to me since the very signals that alert you also affect the direction of your awareness.
Its like a set of training wheels that will help you to learn to ride with the goeal that someday you wont need them.
Am I making any sense to y'all?
If you have experienced lucd dreaming, astral projection, or deep meditation you will know where m comming from. Heck, even if you remember your dreams you are half way there.