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NTT Docomo develops wearable SIM card

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June 11, 2014

The Portable SIM is a prototype device developed by NTT Docomo that forgoes the need to in...

The Portable SIM is a prototype device developed by NTT Docomo that forgoes the need to insert a SIM card into a smartphone

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NTT Docomo has announced the development of a wireless Portable SIM prototype that can be waved in front of a compatible smartphone to provide network authentication information. The device could provide an easier way of switching between handsets in the future.

NTT Docomo began developing the Portable SIM in October 2013, working on the concept and functions. Once designed, a prototype was built in partnership with Sharp.

According to its developers, the prototype features SIM card, Bluetooth and NFC modules. The Portable SIM can transmit a user's network account details to their mobile device via Bluetooth, eliminating the need for inserting a SIM card into the device, as is currently required.

The Portable SIM would allow individuals to use multiple smartphones with the same credentials and to store other user information, such as IDs and passwords for access to websites, software and other devices. It could also cater for easy switching between home and work devices. The company is planning to study how the Portable SIM can be integrated with TVs, music players and in-car informatics systems.

The company is not planning to commercialize the Portable SIM at present, and it will not work with any mobile device currently on the market. NTT Docomo will instead continue with research and development. Part of its work will focus on how to make the device smaller and thinner so that it can be embedded in wearable accessories, such as wristwatches.

Source: NTT Docomo

About the Author
Stu Robarts Stu is a tech writer based in Liverpool, UK. He has previously worked on global digital estate management at Amaze and headed up digital strategy for FACT (Foundation for Art and Creative Technology). He likes cups of tea, bacon sandwiches and RSS feeds.   All articles by Stu Robarts
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