Palm Pistol

The Palm Pistol is an ergonomically innovative single shot double action only
defensive firearm chambered in 9mm that may be fired using either hand
without regard to orientation of the stock. Suited for home defense,
concealed carry or as a backup gun. It is also ideal for seniors, disabled,
or others who may have limited strength or manual dexterity. Using the thumb
instead of the index finger for firing, it significantly reduces muzzle
drift, one of the principal causes of inaccurate targeting. Point and shoot
couldn't be easier. 

Palm Pistol Website:
http://www.palmpistol.com/

Prescription Handguns for the Elderly and Disabled
http://idle.slashdot.org/idle/08/12/04/0433234.shtml

Prescription Handguns for the Elderly and Disabled: This Won't End Well
http://gizmodo.com/5101430/prescription-handguns-for-the-elderly-and-disabled-this-wont-end-well