Patent ID: 9706404
Date: 2017-07-11
CPC Classifications: H04L,H04W

Claim:
1. A method comprising: receiving, by a server computer, an authentication request from a first user device associated with a user; transmitting, by the server computer, a first signal to a second user device associated with the user, the first signal comprising data representing a vibration pattern; receiving, by the server computer, a second signal from the second user device that comprises the data representing the vibration pattern, wherein the second signal is generated using a motor based on the second user device detecting the first signal by one or more of an accelerometer associated with the second user device and a microphone associated with the second user device; determining, by the server computer, that the second signal is valid based on the transmitted first signal; and authenticating, by the server computer, the user based on the determination that the second signal is valid.