title: USB interface barcode scanners
body: <p>Not exactly a programming question, but close. I'll try my luck anyway.</p>
  
  <blockquote>
    <p>The <strong>keyboard wedge
    barcode scanner</strong> inserts the
    translation device between the reader
    and the keyboard. <strong>Data sent through a
    wedge appears as if it was typed into
    the computer, while the keyboard
    itself remains fully functional</strong>.
    Because a computer using a keyboard
    wedge can't tell the difference
    between data that is entered by a
    scanning device, or data that is
    entered by keyboard typing, <em>a wedge
    can be used to easily add barcode
    reading capability to an existing
    computer without modifying software
    applications</em>.</p>
  </blockquote>
  
  <p>I'd like to know if all USB interface barcode scanners automatically translate digital signals from a barcode reader into keyboard strokes for a applications just like wedge or is USB different from wedge?</p>
  
  <p>Many thanks</p>