论文标题
耳朵可穿戴（可耳式）用户身份验证通过声学牙齿
Ear Wearable (Earable) User Authentication via Acoustic Toothprint
论文作者
论文摘要
Earables（耳朵可穿戴设备）正在迅速成为一个新的平台，包括各种个人应用。因此，由于其输入界面有限，传统的身份验证方法由于其有限的输入界面而变得不适用和不便。然而，耳朵通常具有丰富的周围感应能力，可以利用这些能力来捕获新型的生物识别技术。在这项工作中，我们提出了牙齿齿，以利用牙齿诱导的声音效应，该效果由用户进行牙齿手势进行可耳验证产生。特别是，我们设计了代表性的牙齿手势，可以产生带有牙齿信息的有效声波。为了可靠地捕获声学牙齿，它利用耳道和耳朵内部面向内部的麦克风的遮挡效果。然后，它提取多级声学特征，以反映用于身份验证的固有牙齿信息。牙齿的主要优点是它适用于耳朵，并且可以抵抗各种欺骗攻击，因为声音牙齿是通过用户的私人牙齿耳道捕获的，该通道可调节和加密声波波。我们对25名参与者的实验研究表明，只有一个用户的牙齿手势只能达到95％的精度。
Earables (ear wearables) is rapidly emerging as a new platform encompassing a diverse range of personal applications. The traditional authentication methods hence become less applicable and inconvenient for earables due to their limited input interface. Nevertheless, earables often feature rich around-the-head sensing capability that can be leveraged to capture new types of biometrics. In this work, we proposeToothSonic which leverages the toothprint-induced sonic effect produced by users performing teeth gestures for earable authentication. In particular, we design representative teeth gestures that can produce effective sonic waves carrying the information of the toothprint. To reliably capture the acoustic toothprint, it leverages the occlusion effect of the ear canal and the inward-facing microphone of the earables. It then extracts multi-level acoustic features to reflect the intrinsic toothprint information for authentication. The key advantages of ToothSonic are that it is suitable for earables and is resistant to various spoofing attacks as the acoustic toothprint is captured via the user's private teeth-ear channel that modulates and encrypts the sonic waves. Our experiment studies with 25 participants show that ToothSonic achieves up to 95% accuracy with only one of the users' tooth gestures.
