Wearable devices could use your breathing patterns like a password

Wearables such as smartwatches and headphones could be kept in tune with your phone by the way we breathe Delmaine Donson/Getty imagesWhile wearable electronic devices such as smartwatches and earphones can be paired with smartphones or similar tech via a secure Bluetooth link, near-field communication (NFC), and a secure Bluetooth connection, they could soon be linked securely using the way you breathe.Jafar Pourbemany, from Cleveland State University, and his collaborators have created a protocol that can generate a 256-bit encryption code every few seconds around one human breath cycle. This protocol is based on how a user breathes.