Patent ID: 11932197
Assignee: TOYOTA MOTOR NORTH AMERICA, INC.
Field: Control (Instruments)
Classification: CPC B  G | IPC B  G

Claim 6:
7. A method comprising:
determining, by an authentication system, a benchmark response time for a wireless communications device to respond to a challenge based on one or more conditions of the wireless communications device;
setting a threshold response time to the benchmark response time;
sending, by the authentication system, a message to the wireless communications device, the message comprising the challenge;
receiving, by the authentication system, a response to the message from the wireless communications device within a response time; and
authenticating, by the authentication system, the wireless communications device based on the response time being less than the threshold response time,
wherein determining the benchmark response time is based on a series of receptions of challenges and transmissions of responses under varying load conditions of a processor of the wireless communications device.