Wireless pen input device to write directly on the screen?

Question

I am looking to buy a reasonable priced input device, but I want one of those pens that the design people use to write directly on the screen. I saw a pen from Wacom, the Intuos3 Grip Pen, but I'm not sure that I'm right in the workings of product, i.e. writing directly on the screen.

Any suggestions or advice is appreciated.

Answer 1

Those are using special screens, they have sensors on the screen or side of screen to monitor the pen, expensive tools.

Answer 2

Input Devices

Graphics Tablet