JAPANESE RESEARCHERS have announced a prototype of a wearable, universal SIM card.
Boffins at Japanese operator NTT Docomo designed the credit card device to replace traditional device SIM cards with a single proximity-sensing personal ID to power all of the user's Internet of Things devices.
The universal SIM incorporates NFC for pairing, and Bluetooth 4.0 Low Energy for transferring data. The concept is somewhat similar to that of "MiFi" personal internet hotspots.
Although the billions of phones in circulation would need to be replaced with compatible handsets, which might slow take-up, it would mean that users would be free to borrow and swap devices at will without the need to worry about the other person's phone bill.
A spokesperson told us, "This will require compatible handsets and devices. The technology is still a prototype and we have not decided if we will make this technology universal."
While the prototype is credit card sized, the company hopes to be able to incorporate it into smaller, wearable devices in the future. As well as the SIM card, the device also stores credentials such as user names and passwords, though at present it is not clear how these would be secured in the event of device theft.
The advent of the Internet of Things has seen a debate emerge regarding the safety of the myriad of devices likely to be carried with us containing our personal data. Just yesterday it was revealed that internet televisions could be vulnerable to drive-by attacks from hacking drones. µ