The server 404 receives the request 502 and generates 504 a code based on the request 502. The server 404 may embed information in the code, such as channel information, the device ID of the first mobile device 402, the device ID of the client device 406, a pre-authentication code, or any combination thereof. The server 404 transmits the code to the first mobile device 402 via a message 506. The first mobile device 402 receives the message 506 and displays 412 the code. The system 500 then performs the remaining operations as shown in