A Lucid dream "is any dream in which one is aware one is dreaming" . Once lucid in a dream, "people can often choose their actions and exert deliberate control over the dream content" .
we can reach the lucid dreaming state more often, we can regain hours
of our lives, in worlds built from our imaginations, where anything is
possible - like fighting dragons. No wonder the Remee eye mask made
headlines in 2012 after raising a whopping $572,891 dollars, 16
times their original goal of $35,000 through their Kickstarter campaign, and it looks like the Aurora by iWinks is following suit.
IWinks Aurora Lucid Dreaming Mask
dream masks work by "flashing a series of light patterns towards your
closed eyes when you are in REM sleep. Your task is to interpret the
flashing lights as a sign that you are dreaming." 
Therefore timing and intensity are of paramount importance to ensure
the lights aren't too bright to wake you up, yet bright enough to
penetrate your dream world. Recognizing the lights in your dream is the
hard part - they may show up as sparkles on the ocean, or lights on a
Remee Lucid Dreaming Mask Lit Up
mask is lightweight and affordable. You can toggle the timing and
intensity of the lights via their website, and yet some have labelled it
a scam. Perhaps because some users don't get quick, guaranteed lucidity
on the first night, or, more likely, because it doesn't detect REM
sleep, unlike every other lucid dreaming device on the market. The mask
may not be emitting light at the right time during the night to
penetrate users' dreams.
Remee Lucid Dreaming Mask
The Aurora mask by iWinks
tackles this by detecting your REM sleep cycles through brainwave and
eye-movement activity. Their device has alarm clock functionality to
wake you at the optimal moment of your sleep cycle, as well as a
platform for out-of-the-box third party app development.
Both the Remee and Aurora compete with high price lucid dreaming masks like The REM Dreamer which retails for hundreds of dollars.
Why not just use a smartphone app?
Smartphone apps are a good option for people just beginning their experiment with lucid dreaming.
DreamZ for iPhone and Lucid Dreaming App for Android are affordable because they come without a mask. They induce lucid dreaming through dream audio triggers - "cues" that are designed to blend into your dreams without waking you up, as well as through flashing colored lights.
can record your own audio messages to play to yourself during the
night, make use of their dream log to write down your dreams when you
wake up, as well as see statistics of your sleep cycle, all cool
functionality if you are interested in accessing your dream world.
So is this a dream or reality?
There are thousands of people reading books, popping pills and filling forums
with their experiments on lucid dreaming, so it's not a complete
delusion, yet, like anything, it needs dedication and effort as well as
good tools to achieve, especially on a regular basis.
dreaming does have the capacity to unlock our inner
potential, and it only costs a few hundred dollars and some restless
nights sleep, it's worth exploring.
If you don't have a few hundred
dollars to spend, you can always try meditation or Dream Yoga,
timeless methods of cultivating awareness that can be transferred into
your dreaming state, however it has been found that lucid dreaming light
devices can accelerate the process. 
Have you experimented with lucid dreaming? What was your experience?