Content signaturing is provided by a display device comprising one or more source inputs, where each source input is configured to receive a content signal from a corresponding content source. The display device further comprises a content identification module to send sample information derived from each received content signal to a signature processor and to receive from the signature processor content information for each corresponding content source. The display device further comprises a user interface module to produce a unified user interface including a menu option for each content source, where each menu option includes content information identified via the content identification module for the corresponding content source. The display device further comprises a display to visually present the unified user interface.