title: Readable Font that is Web Safe
body: <p>In a web app I work with from time to time the issue of text readability has come up.  The reason is that it involves passwords which will be read off of the web page or written down.  One of my co-workers pointed out the <a href="http://www.dafont.com/crystal.font" rel="nofollow noreferrer">Crystal font</a> as one that is designed to be unambiguous ("l" and "1" aren't confused, "0" and "O", etc), but I'm pretty sure its not useful on the web.  I realize that I will probably have to use a fallback strategy, but am looking for advice on what fonts are good for this purpose and specifically those fonts that users may have available.  Also, links to resources on the topic would be great as well.  Thanks!</p>
  
  <p>Edit:  People have suggested monospace as a readable web font.  Can anyone provide additional info on possible fonts that users might have that may be <strong><em>better</em></strong> than monospace so that I can chain fonts together to get the best possible result?</p>