Patent attributes
Multiple factor authentication of a user is provided by verifying a first authentication factor for the user. At least one target endpoint device is identified relative to the user. An application program interface (API) is accessed and used to generate a communication request that includes a first portion specifying the target endpoint device and written in a format of an application program interface (API), and a second portion that includes a set of one or more documents written in a programming language that includes call flow commands for call routing logic of a call control server. The call flow commands include commands specifying how to communicate a security code. The communication request is transmitted to the call control server. Input is received from the user. A second authentication factor is verified for the user by comparing the input to the security code.
