The following description has been provided regarding the patent:

In simplified terms, a small projector beams certain UI elements onto the user’s skin, and a camera keeps an eye and reads the user’s interaction with the beamed UI. Afterwards, the information is processed by a chipset present inside the wearable and translated into actions. Other interesting details of the patent show that for example, it can map out locations on the smartwatch, such as landmarks, points of interest and others. Not only this, but the patent also suggests that the virtual UI technology could also be used for ‘head mounted display’, which is very similar to what is brought forward by Microsoft HoloLens.

We are hoping that future wearables introduced from Samsung will finally be able to present such an interface to the user, but for now, we will have to rely upon the circular, or squarish watch faces in order to check our daily notifications. USPTO

Samsung patents a smartwatch which will project a interface on your hands   TechWorm - 98Samsung patents a smartwatch which will project a interface on your hands   TechWorm - 14