(DOCOMO) announced today that it will offer Japan Welcome SIM TM cards—prepaid SIM cards for overseas visitors to Japan—to all press and media representatives attending the World Press ...

DoCoMo, Japan’s dominant mobile carrier, has applied for Japanese and overseas patents related to the Portable SIM. It’s still in the research phase and is not yet compatible with smartphones ...

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.

Japan Welcome SIM applications are accepted in English, Japanese, Chinese, Korean and Thai at https://docomo.prepaid-sim.jp/lp card registration required).

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NTT Docomo’s Portable SIM exists only in prototype form right now, incorporating Bluetooth, NFC, and SIM technology into a unit around the size of a credit card.

NTT DoCoMo's Portable SIM prototype can wirelessly activate any tablet or smartphone for network access. It could be shrunk and worn as a bracelet or other wearable device.

While DoCoMo considered incorporating SIM cards into wearable technology, the new app can replace the smartcard when used with the chipset software. It pairs a master device such as a smartphone ...

NTT DoCoMo has announced a new portable SIM card, it has been designed to separate your SIM card from your smartphone, and the company will be showing off a prototype of the device at the Mobile ...

NTT DoCoMo has announced developing a multi-profile SIM to be used across carriers internationally, allowing users to switch between profiles that include phone numbers, contracts, and data ...