A million-dollar challenge to crack the script of early Indians

Every week, Rajesh PN Rao, a computer scientist, gets emails from people claiming they've cracked an ancient script that has stumped scholars for generations. These self-proclaimed codebreakers - ranging from engineers and IT workers to retirees and tax officers - are mostly from India or of Indian origin living abroad. All of them are convinced they've deciphered the script of the Indus Valley