Rather than relying on a camera to read small dots on special paper, these pens work with practically any paper. And unlike the bulky Pulse with its ostentatious display, they are practically indistinguishable from normal pens and both come with software that can do a decent job of converting handwriting to text. The tradeoff is that some of the electronics have been offloaded to a small receiver that must be positioned on the paper, creating a two-piece solution.
IOGEAR's Mobile Digital Scribe, powered by Pegasus Technology, is a follow-on from a similar earlier product that required that the receiver be tethered to the PC. The Scribe can still function this way. In fact, when connected to a PC, the pen can be used to scribble (presumably for quick doodles, otherwise why not just use the keyboard?) just as its tethered predecessor could. Writing appears on an on-screen note that appears as soon as the writer begins to write, and the software can have these pages "float" on the screen as sticky notes..