It is basically a big laser printer with a touch screen LCD display that can print any design you choose on your nail: logos patterns, even faces.
All you have to do is choose your design, paint your nail white or some light color (this will serve as base color), put a coat of their special cleat coat to have a smooth surface for the printer and then insert your finger in the finger holder.
The printer shows you a preview of the nail so you can adjust size, color and center the design to match your actual nail.
After the machine has done its job, you will have to apply a clear top coat on the nail fast so the ink doesn't smudge (the machine uses regular printer cartridges)
The machine does a great art work but, as any technology innovation, I'm sure it will cost big bucks. There is no retail price advertised but I would say it could easily go up to $3,000+.
Then again, this machine is not something you will have at home, it's more something you will find at the mall.
Make sure to check their website here!
They have a video so you can see what I'm talking about.