Flipping open a small jade-green box, Pranav Poddar unveils a shiny maroon-colored object the size of a sim card. This is the enviro chip that changes the constant nature of radiation, harmful for the human body, to a random one, which is safer, he says as he carefully fixes the glistening device slightly above the centre of the back panel of a mobile phone. The position where you fix it is important, as its efficacy at controlling the mobile phones radiation depends a lot on its location, adds the director of the Delhi-based Synergy Environics, which provides solutions for electromagnetic radiations emitted from mobiles, computers and cell phone towers.