Japanese carrier NTT Docomo has unveiled a new device called Portable SIM that aims to replace SIM cards in smartphones and tablets. This would let you wireless activate any compatible smartphone or a tablet with securely stored subscriber identity information on the device. This portable authentication device is still in prototype stage, so it is not yet compatible with any smartphone or tablet currently on the market. But this could be incorporated in wearable devices in the future says the company. Continue reading “NTT Docomo unveils Portable SIM, wearable tech that could replace SIM cards”