Systems and methods are disclosed for activating a personalized user profile on a device based on the detection of an outlying user input. A media guidance application detects a user input that is inconsistent with an active user profile. In response, the media guidance application identifies a candidate user that both shares a location with the device and has a user profile consistent with the user input. The media guidance application activates the user profile of the candidate user as a temporary active user profile on the device.