9. A non-transitory computer readable medium whose contents cause a security access computing system to: receive a request for a web page including a completely automated public turing test to tell computer and humans apart (CAPTCHA); randomly select an image file and an audio file from a collection of multiple image file and audio file pairs, wherein each of said image file and audio file pairs are contextually related to one another; in response to said request, transmit a web page including said randomly selected image file and audio file, wherein said randomly selected image file and audio file are contextually related to one another; receive a user selection of a label; determine whether said user selected label matches one or more stored labels that are contextually related to said randomly selected image file and audio file; and allow access to said electronic service upon a determination that said user selected label matches said one or more stored labels.
9. A non-transitory computer readable medium whose contents cause a security access computing system to: receive a request for a web page including a completely automated public turing test to tell computer and humans apart (CAPTCHA); randomly select an image file and an audio file from a collection of multiple image file and audio file pairs, wherein each of said image file and audio file pairs are contextually related to one another; in response to said request, transmit a web page including said randomly selected image file and audio file, wherein said randomly selected image file and audio file are contextually related to one another; receive a user selection of a label; determine whether said user selected label matches one or more stored labels that are contextually related to said randomly selected image file and audio file; and allow access to said electronic service upon a determination that said user selected label matches said one or more stored labels. 13. The non-transitory computer readable medium of claim 9 , wherein said web page further comprises a user engageable function to initiate playback of said audio file.