1. A managed biometric-based notification system for recognizing a person and for selectively notifying one or more users of the system, the system comprising: an image acquiring system for capturing from a live human being a first content comprising a feature set; a special purpose computer including a database, a case module, a subscription content module, a search engine, a comparison module, and a notification module; the database including second content that includes a feature set associated with a personal identifier; plural receiving nodes, each receiving node associated with at least one personal identifier that is unique among the receiving nodes; the case module for updating the second content stored in the database with the first content acquired by the image acquiring system; the subscription content module for updating the second content stored in the database by utilizing data from a third party when a third party subscription allows the comparison module to compare the feature set of the first content and a feature set of the third party data; upon acquisition of the content, the search engine for searching the database for second content feature sets corresponding at least in part to the first feature set; upon finding one or more corresponding second content feature sets, the comparison module for determining the degree of similarity of each corresponding feature set and selecting at least one corresponding feature set as a best match; and, the notification module for determining a notification component including the personal identifier of the best match and selecting the receiving node associated with the personal identifier of the best match; wherein the notification module is configured to transmit the notification component to the selected receiving node when the best match meets a pre-selected similarity threshold.