The company says the prototype device is a SIM-based authentication device that can wirelessly activate any compatible smartphone or tablet for network access. The NTT Docomo Portable SIM includes three modules – SIM card, Bluetooth and NFC.
The idea behind the NTT Docomo’s Portable SIM is that it can enable SIM-less tablets to make phone calls or a single SIM smartphone to use another SIM for various functions. The device also allows users to switch subscriber identity to the mobile device via Bluetooth, eliminating the need to physically insert a SIM card and replacing it with a simple tap.The company further said the “Portable SIM can securely store multiple credentials, such as IDs and passwords, so it also can be used with PCs and other connected devices to eliminate the need to type in such information when accessing online-shopping and other sites. Going forward, Docomo will continue to study key technologies, functions and service applications before commercialization of the device.”