--- a/hws/hw02.tex	Tue Oct 04 13:44:05 2016 +0100
+++ b/hws/hw02.tex	Tue Oct 04 17:10:01 2016 +0100
@@ -45,10 +45,11 @@
       Why is this a problem?
 
 
-\item Voice voting is the method of casting a vote in the `open air' for everyone
-present to hear. Which of the following security requirements do paper ballots 
-satisfy \textbf{better} than voice voting? Check all that apply and give a brief explanation 
-for your decision.
+\item Voice voting is the method of casting a vote in the `open air'
+  for everyone present to hear. Which of the following security
+  requirements do paper ballots satisfy \textbf{better} than voice
+  voting? Check all that apply and give a brief explanation for your
+  decision.
 
 \begin{itemize}
 \item[$\Box$] Integrity
@@ -81,6 +82,11 @@
   tabulated. You can even change your vote on the polling day in
   person. Which security requirement does this procedure address?
 
+\item Paper ballots boxes ned to be guarded on the voting day, but
+  can be unguarded the rest of the year. Why do pure electronic voting
+  machines need to be guarded the whole year?
+  
+
 \item What is the main difference between online banking and e-voting? 
 (Hint: Why is the latter so hard to get secure?)