Acoustic Near Field Communication (ANFC)

Microsoft announced the development of Dhwani, a secure peer to peer acoustic near field communication, just a week before they announced they would be terminating the Microsoft Tag service. The development was completed at Microsoft Research India and Dhwani is the Hindi word for ‘sound’. A novel feature of Dhwani is ‘JamSecure’ a technique which uses self-jamming, coupled with self-interference cancellation at the receiver, to provide a theoretically secure communication channel between the devices. The full paper is here (PDF).

Acoustic NFC

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