While it is just a concept, many designers and artists would be more thankful for this new invention of Jinsun Park which is a popular tool used by all design programs but had never been pushed to the real world.

The old and known eye-dropper or color picker, took the body and becomes this wonderful tool to get the real colors of our environment and automatically draw with them like pen.

Color scan pen concept by Jinsun Parker

You just need to place the stylus on the object and press scan button to pick that color. Voila! color is detected by the sensor and you are able to draw with a cartridge RGB mixing ink pen as shown in the images by Tuvia. This innovative device to help people detect and observe the changes of color in nature, and could create more jobs and a sense more complete reflection of the colors that surround us.

The only real problem in how the prototype is designed in reality is that the RGB range of ink color whereas CMYK is a need to achieve a slightly more accurate approximation and always assuming that draw on a white surface. But I still think it is an excellent idea.