Abstract: A method for generating a verification code. The method comprises providing a digital video disc having data stored thereon configured to cause a digital video disc player to read the data in a manner sufficient to cause a video presentation to be displayed and to randomly generate a verification code from a plurality of alternative codes. The method further comprises operating the digital video disc player in a manner to cause the video presentation to be displayed, operating the digital video disc player in a manner such that after at least part of the video presentation is displayed the digital video disc player generates the verification code via the data of the digital video disc, and using a client computer system to input the verification code via the Internet to a host computer system.