US 12,086,221 B2
Multi-factor authentication for virtual reality
Eric Diehl, Culver City, CA (US); and Scot Barbour, Culver City, CA (US)
Assigned to Sony Group Corporation, Tokyo (JP); and Sony Pictures Entertainment Inc., Culver City, CA (US)
Filed by Sony Corporation, Tokyo (JP); and Sony Pictures Entertainment Inc., Culver City, CA (US)
Filed on Feb. 1, 2019, as Appl. No. 16/265,521.
Prior Publication US 2020/0250284 A1, Aug. 6, 2020
Int. Cl. G06F 21/32 (2013.01); G06F 3/01 (2006.01); G06F 3/0482 (2013.01); G06F 21/36 (2013.01); G06V 40/20 (2022.01)
CPC G06F 21/32 (2013.01) [G06F 3/012 (2013.01); G06F 3/013 (2013.01); G06F 3/017 (2013.01); G06F 3/0482 (2013.01); G06F 21/36 (2013.01); G06V 40/20 (2022.01)] 10 Claims
OG exemplary drawing
 
1. A method of authenticating for a virtual reality (VR) system using a plurality of factors of authentication, the method comprising:
collecting a password entered into a virtual keyboard for a first factor of the plurality of factors of authentication,
wherein the password is entered by a user gazing at and selecting a series of data including numbers, letters, or images on the virtual keyboard randomly projected in polar coordinates on a display of the VR system such that each data of the series of data projected on the display is represented by an azimuth angle and an elevation angle;
collecting a biometric fingerprint from movements of the VR system for a second factor of the plurality of factors of authentication,
wherein the biometric fingerprint is collected from detecting head gestures of the user including at least one of head movements and eye gazes using the VR system,
wherein a pre-defined acknowledging head gesture and a pre-defined unselecting head gesture are detected using a combination of phases including: a first pause in which the VR system is still; a movement of the VR system in a first direction; a movement of the VR system in a second direction opposite to the first direction; and a second pause in which the VR system is still;
wherein the biometric fingerprint is measured as acceleration projected on two axes of the polar coordinates,
wherein the projected acceleration is generated by:
measuring a first measured acceleration of the pre-defined acknowledging head gesture; measuring a second measured acceleration of the pre-defined unselecting head gesture; and normalizing the first and second measured accelerations.