Bone sound transmission
Transmission du son dans les os

Sound transmission via bones should be specific to each person.

See also bone recognition using X-rays.

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Reflection of acoustic waves in the head
Réflexion d'ondes acoustiques dans le crâne

or head resonance. Proposed by Dr. James Wayman for the DoD/NSA.
Proposé par le Dr James Wayman pour le département de la défense américain.

The body as a password (1997)

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Bone sound transmission
Transmission du son par les os

Sony issued a patent (US 2003/0113001) where a speaker send a sound pulse in the finger, which is modified by the flesh and bone, and read with a microphone, enabling personal identification.
Sony a publié un brevet où un haut-parleur envoie une impulsion sonore dans le doigt, qui est modifiée en traversant la chair et l'os, lue avec un microphone, ce qui permettrait l'identification des individus.

ETRI

• ETRI
• (2019 Oct) Identity Recognition Based on Bioacoustics of Human Body / Joo Yong Sim et al.

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Skull sounds

• (2016) SkullConduct: Biometric User Identification on Eyewear Computers Using Bone Conduction Through the Skull / Stefan Schneegass (University of Stuttgart), Youssef Oualil (Saarland University), Andreas Bulling (Max Planck Institute for Informatics)
• SkullConduct involves measuring the bone conduction of sound through a user's skull, and should be perfect for “smart glasses”, VR headsets or smartphones.