Deciphering Indus Valley Civilization

Indus Valley is the largest among all the ancient civilizations that existed around 4500 years ago, spread in region of what is now the modern day Pakistan, Afghanistan, and northern parts of India. Interestingly, Indus Valley Script is the world's oldest script that still remains undeciphered. Recently, I came across this awesome TED talk on "Computing a Rosetta stone for Indus Valley Script". Here is the link: 

In this talk by Dr. Rajesh Rao puts forth his argument as to why the symbols represent a language script while disproving the claims of other research groups which say that those symbols do not represent a language script.

Also read this excellent article by Dr.V.S. Ramachandran, brain researcher in California on plausible connections of Indus valley civilization with Easter Islands in Pacific ocean, a region unconnected geographically with Indus valley..!

Quoting Voltaire, "No problem can withstand the assault of sustained thinking". I eagerly await to see this enigma called Indus Valley and the secrets cracked soon..!

Update:
http://www.nature.com/news/ancient-civilization-cracking-the-indus-script-1.18587