Skin properties can be used to recognize persons:
Lumidigm has established that the absorption spectrum of the skin depends on the individuals.
Lumidigm a découvert que le spectre d'absorption de la peau est dépendant des individus.
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Several LEDs send light at different wavelenghts into the skin, and photodiodes read the scattered light, which is analyzed to perform the authentication. Plusieurs DELs envoient de la lumière de différentes couleurs dans la peau, et des photodiodes lisent la lumière diffusées, qui est ensuite analysée pour effectuer la reconnaissance. |
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Skin impedanceBio-Dynamic signature
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Pulse-Response biometrics |
(2015) Christian Holz and Marius Knaust from Yahoo Labs propose biometric touch sensing, a new approach to representing touch events that enables commodity devices to seamlessly integrate authentication into interaction: From each touch, the touchscreen senses the 2D input coordinates and at the same time obtains biometric features that identify the user. A watch prototype (Bioamp) senses the impedance profile of the user’s wrist and modulates a signal onto the user’s body through skin using a periodic electric signal. This signal affects the capacitive values touchscreens measure upon touch, allowing devices to identify users on each touch.
ETRI |