The Cellsafe® Radi Chip™ ( patent pending ) technology has been developed by an Australian RF engineer. Radi-Chips consist of multiple layers of specially formulated microwave absorbing materials, combined with a specially engineered passive directional RF coupler. The layers absorb the majority of the transmitted RF signal from the mobile phone / iPad antenna/s while the RF coupler controls and disperses the signal towards the back of the phone away from the head (iPad Radi-Chips disperse the signal towards the front of the device and away from the users lap / body). Devices which claim to act as ‘shields’ may significantly interfere with the normal operation of the phone. Reduced or redirected transmission levels caused by such shielding products can interfere with call reception and quality and may also cause calls to drop out. The Radi Chip technology has been scientifically tested and proven not to interfere with the transmission signal or with call reception, unlike these ‘shielding’ devices.