This is a review of the active stylus know as.
you can get it here on amazn: Dotpen http://goo.gl/hbmdq7 RearGear Stylus http://goo.gl/8bEomT or
in Germany Hama Active Stylus http://goo.gl/IYcpOs
I've made some tests how it performs in sketching or writing.
The conclusion: The quailty especially in writing is strongly dependeted on the software you use. With „INKredible" it works quite good. There are some cons and pro, the plastic tip will not scratch your display, it offers even less frichtion than the rubber passive stylus. And it offers more precision when it comes to closing tabs on an IPAD in Safari.