Did you know about this hidden menu on Samsung Galaxy smartphones? You can use it to test different aspects of your phone like if you think your LCD/touchscreen is not working properly, LED indicator, vibration, cameras, etc.
It's a high tech pen. Scan the color you want to use then the pen will draw with that color! I could use for my anime drawings and have the right colors instantaneously. I really want this, drawing would be so much fun with this!