A mobile computing device such as a smartphone may allow a user to confirm their identity during an authentication process by moving their phone according to a specified authentication gesture. The authentication gesture may be one that the user previously specified during an enrollment process and may otherwise be secret (e.g., the computing device may prompt the user to “Move the phone according to your secret authentication gesture”). In another example, the computing device may specify a type of authentication gesture for the user to perform (e.g., the computing device may prompt the user to “Move the phone in a star shape”). A user may provide an authentication gesture in addition to a username and a password in a multi-factor authentication scheme.
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Andres, Isaac, "USING DEVICE MOVEMENT FOR MULTI-FACTOR COMPUTING DEVICE AUTHENTICATION", Technical Disclosure Commons, (January 09, 2019)