A compelling device for single-handed users: Maltron's single-handed keyboard:
The special shape and letter layout have been very carefully planned, taking into account the limited number of keys that can be accessed quickly and comfortably. Single handed MALTRON keyboard in use, plus left-handed keyboard
Word-processing input speeds of 85 words per minute have been demonstrated by operators using Maltron single handed keyboards. The fully ergonomic shape ensures freedom from strain and no RSI type problems have been reported in over 10 years, although all the work is done by one hand.
Left-hand or right-hand keyboards are available.