The TouchSteam LP is a unique ergonomic keyboard whose claim to fame is its lack of keys and instead a sensory surface for both typing and mousing which needs only surface contact and no force to process gestures. On the typing surface keys are printed as the same size as standard physical keys and by hitting them with one finger you can type and using one finger on each hand at a time is reserved for interpreting keystrokes. Multiple finger gestures using the same hand are reserved for mousing and customized responses. Using any two fingers you can use the surface as a touch pad, with three you can act as if you're holding the mouse button down, with four you can scroll and by resting all of your fingers on the board you stop sending input so you can stop typing without needing to adjust your position. Built in are gestures for cutting and pasting, reloading browser windows, opening and closing applications and a number of modes with custom gestures for programs such as Emacs and Maya.

The keyboard is portable as it comes with a metal stand with fabric covered gel wrist rests and with the typing surface on two very light boards connected in the center and a 5' USB cable extending from the top right. The typing area is 5" by 13" and it weighs just 13 ounces. It's designed to emulate any standard USB keyboard and mouse making it portable and usable under any Windows, Linux, Sun or Macintosh system with USB support and available ports, no specialized device drivers needed. To accommodate all typing preferences, QWERTY, Dvorak, Qwerak and international key layouts are available. In order for you to be able to center yourself without looking at the keyboard there are small braille dots on the home row and where your thumbs to be placed. As someone with very small hands I recommend printing out their to scale keyboard layouts to make sure you can use a standard sized keyboard of this type without too much movement or consider one of their other products as the $339 US price is too much to spend on something you're not sure you'll be able to accommodate but worth it for anyone who uses their computer extensively or is prone to RSIs and can handle the retraining time. FingerWorks warns it will take a few weeks to adjust to the new kind of keyboard, especially if you're changing keyboard layouts at the same time, but having had the keyboard for only a few days I've found the mouse gestures something that took very little time to adjust to and the strain on my hands has been greatly reduced by the lack of pressure needed and the variations of gestures which ensure no one part of my hand is under too much stress at a time. The Java based MyGesture Editor lets you customize mouse gestures to ones you find more intuitive or would find more useful than the standardized ones.

For more information about the TouchStream LP, the web site can be found here: ttp://www.fingerworks.com/lp_product.html and for more information about FingerWorks and their other products their website is http://www.fingerworks.com

Specialized Gestures Sets:
Point, Click, Enter, Drag and Scroll
Text Editing/Formatting
Cursor Manipulation
Internet Browsing
File Operations
Application Controls
Photoshop Gestures
Maya Gestures
Desktop/Tool Selection Gestures
Third Mouse Button Emulation
Gaming Gestures (Firing, etc.)
Programmer Gestures
Emacs Gestures
Modifier Chords for Ctrl, Shift, Alt, Win/Meta, AltGr and Cmd

Specialized OS Modes:
Mac Mode
Windows Mode (Default)
Two/Three Button Mouse Mode
Linux/Adobe Mode - Good for Adobe applications and modern Linux windows managers
Unix/BeOS Mode
Linux/Emacs Mode - Like Linux/Adobe Mode only with certain key mappings redone to match Emacs key combinations for things such as copy/cut/paste and undo/redo

Sources:
Personal Experience
TouchStream LP. FingerWorks. 24 Jan. 04 <http://www.fingerworks.com/lp_product.html>.