Input devices

Magnetic Stripe Readers: At POS terminals, ATMs and in security applications

Graphics Tablet: Inputting freehand drawings or retouch photographs

MICR (Magnetic ink character recognition): 

OMR (Optical Mark Reader): Inputting pencil marks on a form such as a school register, candidate exam answers, any application involving input of a choice of options

OCR (Optical character reader): Inputting text to a computer ready for processing by another software package such as word processors, spreadsheets, databases etc.

Light Pens: Where desktop space is limited, it is used instead of a mouse or for drawing applications where a graphics tablet might be too big.