US Patent 11558365 Multi-second factor authentication

A method for securing and authorizing sensitive operations is described. A computing device may receive a first authentication factor from a second computing device based on a request from the second computing device to authorize an operation; upon validating the first authentication factor, send to at least the second computing device and a third computing device, a request for a second authentication factor; and authorize the operation based on validating the second authentication factor from the second computing device or from the third computing device, or from both.