title: jQuery: How do I listen for general keyboard input?
body: <p>I'm building a site that after the page is loaded, needs to listen for a particular keyboard string. </p>
  
  <p>The event I am interested in is actually a scanner scanning an object, but it presents to the site as keyboard input, of the form <code>~XXX~</code>.</p>
  
  <p>I see jQuery has a <code>keypress()</code> event that you can bind to a particular object. </p>
  
  <p>But how can I listen for general keyboard input, after <code>$(document).ready</code>?</p>