Systems, methods, and computer-readable media are disclosed for obtaining authenticated access to a service provider system, or more specifically, to a user account maintained on the service provider system, using a single key authentication mechanism. This mechanism includes generating an authentication image that includes user-generated content, user application-generated content, and service provider-generated content; sending the authentication image to the service provider system, which is configured to authenticate access to the user account based at least in part on the authentication image; and receiving an indication as to whether access to the user account has been authenticated.