Thought this could be interesting:
   [1]http://thehackernews.com/2013/12/acoustic-cryptanalysis-extracting-r
   sa.html
   Paper:
   [2]http://www.tau.ac.il/~tromer/papers/acoustic-20131218.pdf

References

   1. http://thehackernews.com/2013/12/acoustic-cryptanalysis-extracting-rsa.html
   2. http://www.tau.ac.il/~tromer/papers/acoustic-20131218.pdf