I used this too, until my kid destroyed it. It's a great tool, especially considering there is almost no lag between the "pen" and the display. However, the c

I used this too, until my kid destroyed it. It's a great tool, especially considering there is almost no lag between the "pen" and the display. However, the contrast is a bit low and makes it difficult to view in moderate to low light. Great for outdoors though. I have one with four magnets on the back and keep it on my fridge.