Go to:    Digital Pen Logitech has licensed technology from Anoto, a Swedish company, for an ink pen with an embedded digital camera that "remembers" handwriting and, when cradled and synchronized with a PC, can transfer those pen strokes into a digital file. You can make a sketch or take notes on paper and save yourself the trouble of transcribing those ideas into a format that can be entered into a computer for transmission elsewhere. The Logitech io Pen -- I/O stands for input/output -- only works when writing on special paper that is embedded with an invisible microgrid of tiny dots arranged like graph paper. It's the grid that allows the pen to remember its strokes.