Tech Times (March 21) -- The invisibility cloak that the fictional Harry Potter used to move around Hogwarts undetected may have promising applications in real life, particularly when used in the battlefield. The material used to create a cloak, which was originally developed by researchers from the Massachusetts Institute of Technology and Illinois, attempts to replicate the special ability of cephalopods such as the octopus and squid to blend in with the environment to evade their predators.