Cranezilla --Mark Crane's collection of rarely annotated links

Twiddler The Twiddler is a pocket-sized mouse pointer and keyboard that straps into the palm of one’s hand leaving the other hand free. It plugs into both keyboard and serial ports on IBM-compatible PC's and works on DOS, MS Windows, Unix, and Palm Pilot operating systems. Its special keypad incorporates "chord" keying which consists of pressing key combinations to generate a specific character. With only 12 finger keys and 6 thumb keys, the twiddler can emulate the 101keys on the standard keyboard.
Advantages for Nursing:
Could replace more archaic methods of transcription
One-handed operation leaves the other hand free
Sealed construction eliminates dust and dirt problems
Fast learning curve claimed by the manufacturer