List 3 categories of alternative input devices?

The Six Categories of Input devices

1.Typing Devices
example: Keyboard

2. Pointing Devices
example: Mouse, joystick, trackball,light pen or stylus, track pod, track point, touch screen, touch pod.

3.Optical Reading Devices
Bar code reader
biometric scanner
OCR - Optical Mark Reader
HPR - Hand Print Recognition
Scanner/Image Scanner
Flatbed
Handheld
CD/DVD Rom's Drive
Retinal I.D
Finger Print I.D

4. Magnetic Reading Devices
MICR - Magnetic Ink character Reader
Magnetic Stripes Reader
Floppy Disk Drive
External Hardrive/disk
USB Port

5. Audio Input Devices
Microphone
Headset
Voice Recognition Unit
Earpiece

6. Connectivity Devices
Bluetooth
Infrand
WiFi
Modem/router
Smart Bro
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