The hand-held scanner has sensors in a housing small enough to be manipulated with one hand. In this system, the document remains motionless as the scanner is manually passed over it. They are limited in the width of the area they can scan, but are popular because of their versatility and low cost.
A variation of the hand-held scanner is the |bar code scanner|. They usually are shaped like pens or guns. Companies and libraries use them to make inventory control easier.
