A British start-up wanted to turning fictional superpowers into reality - so invented an invisibility shield.br br The company, London-based Invisibility Shield Co., have now launched a 6ft tall 'megashield', as well as portable roll-up versions which can hide people and objects completely from view in broad daylight.br br The team, who launched a Kickstarter funder on Tuesday (26 Mar), say they spent four years developing and testing optical cloaking technology to create their latest shields.