
diff -r 8e5e84b14041 -r 619073c37649 handouts/ho01.tex
--- a/handouts/ho01.tex	Wed Dec 17 17:50:34 2014 +0000
+++ b/handouts/ho01.tex	Thu Dec 18 12:00:44 2014 +0000
@@ -183,21 +183,22 @@
 
 \subsection*{Of Cookies and Salts}
 
-Let us look at another example which will help with
-understanding how passwords should be verified and stored.
-Imagine you need to develop a web-application that has the
-feature of recording how many times a customer visits a page.
-For example in order to give a discount whenever the customer
-has visited a webpage some $x$ number of times (say $x$ equal
-$5$). There is one more constraint: we want to store the
-information about the number of visits as a cookie on the
-browser. I think, for a number of years the webpage of the New
-York Times operated in this way: it allowed you to read ten
-articles per month for free; if you wanted to read more, you
-had to pay. My best guess is that it used cookies for
-recording how many times their pages was visited, because if I
-switched browsers I could easily circumvent the restriction
-about ten articles.
+Let us look at another example which will help with understanding how
+passwords should be verified and stored.  Imagine you need to develop
+a web-application that has the feature of recording how many times a
+customer visits a page.  For example in order to give a discount
+whenever the customer has visited a webpage some $x$ number of times
+(say $x$ equal $5$). There is one more constraint: we want to store
+the information about the number of visits as a cookie on the
+browser. I think, for a number of years the webpage of the New York
+Times operated in this way: it allowed you to read ten articles per
+month for free; if you wanted to read more, you had to pay. My best
+guess is that it used cookies for recording how many times their pages
+was visited, because if I switched browsers I could easily circumvent
+the restriction about ten articles.\footnote{Another online media that
+  works in this way is the Times Higher Education
+  \url{http://www.timeshighereducation.co.uk}. It also uses cookies to
+restrict the number of free articles to five.}
 
 To implement our web-application it is good to look under the
 hood what happens when a webpage is displayed in a browser. A




