diff -r 690d778b9127 -r 486153025d71 hws/hw02.tex
--- a/hws/hw02.tex	Fri Apr 17 11:49:10 2015 +0100
+++ b/hws/hw02.tex	Wed May 20 01:24:37 2015 +0100
@@ -8,6 +8,24 @@
 \section*{Homework 2}
 
 \begin{enumerate}
+\item (Optional) Often problems in e-voting are due to
+      difficulties with authentication. Keep this in mind for
+      what could go wrong with the following discount offered
+      by an insurance company: John Hancock is partnering with
+      Vitality, which you might know as one of those
+      work-related wellness programmes. The programme is
+      available in 30 US states. If you sign up for this, John
+      Hancock will send you a free Fitbit monitor. That's a
+      tiny, pill-shaped device that some people wear in
+      sleek-looking bracelets to track how far they walk/run,
+      the calories burned, and the quality of sleep. That
+      means the insurance company would know exactly when a
+      customer does a sit-up, how far she runs -- or when he
+      or she has skipped the gym for a few days. For `good'
+      customers there will be a discount in their premiums. 
+      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