Dr Markus Kuhn said the SIM could have been replaced a long time ago . He believes 3D alternative could be typing in a user identifier and password directly into a ph3D - like we do with Wi-Fi networks . Or details could be encoded in QR codes photographed by a ph3D camera . The University of Cambridge lecturer also believes the time is right to switch because of recent advances in cryptographic techniques .
Dr Markus Kuhn said the SIM could have been replaced a long time ago . He believes one alternative could be typing in a user identifier and password directly into a phone - like we do with Wi-Fi networks . Or details could be encoded in QR codes photographed by a phone camera . The University of Cambridge lecturer also believes the time is right to switch because of recent advances in cryptographic techniques .