Scanners

Scanners

1. OCR (Optical Character Recognition)

   • Scanners that are mostly used in photostat machine.

2. OMR (Optical Mark Recognition)

   • Scanners that are usually used by examination centres.

3. Barcode

   • Scanner uses laser beams to read.

4. QR Code

   • Stores information in both horizontal and vertical direction.

5. RFID (Radio Frequency Identification)

   • Uses radio signals to communicate with tag attached to object; an analog signal.
     • Read information via radio waves.
   • Able to track:
     • SmartTag that is used in toll plaza - has micro-processor chip.
       • Tracking location of items/people especially in military/army.
         • Tracking duration/direction of runners in a marathon.
           • Checking out library books.
           • Animal tracking tags, inserted beneath the skin.

6. Magstripe Scanner

   • Read the magnetic stripe on cards such as credit cards, back cards, etc.

7. MICR (Magnetic Ink Character Recognition)

   • Scanners read text printed with magnetized ink.
     • Convert MICR character into a form the computer can process.
       • Mostly used by banking industries to process cheques.