iPen is an innovative ball-point pen styled stylus designed by Cregle Inc. The iPad stylus consists of two parts, including a stylus and a unique external receiver. All you need to do is to plug the receiver into your iPad 30-pin port before your start writing or painting with iPen. The external receiver can gather the stylus’s ultrasonic and infrared signal, while the feature makes the iPad stylus to actively transmit 60 samples per second to pinpoint the stylus’s exact location. In addition to proximity sensitivity and precise writing and drawing, iPen also features palm rejection, so you will never worry your palm interferes with your work. After the break, check out the demo video.