HandyKey Corp.  
(516) 474-4405
141 Mt. Sinai Avenue
Mt. Sinai, NY 11766  Handykey's web site

Thad prefers the Twiddler and has reached speeds of 50 wpm on it. It includes a tilt sensitive mouse and retails for around $200, which is quite reasonable for a keyboard/mouse combo. Learning the alphabet takes 5 min. (it's sequential), touch typing in an hour, and 10+ wpm over a weekend. Thad says it was uncomfortable to use at first, but over a week of use you learn how to hold it properly for your size and shape of hand. The default key layout is more optimized for speed than is first expected. The user defineable macro package pushes word rates significantly higher over letter typing (supposedly > 4000 button combinations are possible). Macro packages can be reloadable depending on the application.

The BAT by Infogrip

Their web site. You may also be able to get these (or a variant) from:
Select Tech
(215) 277 4264
1657 The Fairway
Suite 151
Jenkintown, PA 19046


Both the Chord Keypad and the DataEgg represent good solutions to one-handed keyboarding. The advantage they have over the Twiddler is instant access to the typing hand (the Twiddler requires the strap to type comfortably). Thus, these keyboards are good for providing wearable computer support for emergency crews. The 7 button typing standards have also been around for a longer period of time.
Preliminary Image (34k gif)
Gary Friedman
(916) 983-2249


The half-QWERTY is just like it sounds: half a normal qwerty keyboard with a modifier key to let you type the other half with the same hand. A blurb for Matias' software to turn a mac into a one-handed keyboard is here. Contact: Edgar Matias The Matias Corporation 178 Thistledown Boulevard Rexdale, Ontario, Canada M9V 1K1 (416) 749-3124 Gary Friedman

Home grown/specialized keyboards

Steve designed and built this Keyboard/control for early 1980s wearable computer system. Unit is built into the handle of an electronic flash lamp housing to allow for simultaneous one-handed control of computer, camera, and flash lamp. The original design had one microswitch for each finger and 3 possible microswitches for thumb. With the advent of the Twiddler this keyboard has become obsolete, though it still hangs in Steve's closet, and still works. (Now the Twiddler has replaced it in the current version of the WearCam system).

The original version ran a 6820 Peripheral Interface Adapter (PIA) on an Apple ][ (6502) architecture, but you can easily build one to work on a PC architecture. The simplest interface is via the parallel port of a PC, where the eight (4+3 = 7) switches can be wired right to the parallel port. By far this is still the lowest cost form of keyboard, as a set of microswitches can easily be found from surplus equipment.

A good source for more keyboard information

Visit the keyboards web page.

Last modified: Sun Feb 20 23:39:41 EST 2000