A multi-restaurant facial recognition includes one or more cameras, first point-of-sale (POS) terminals, and a backend server. The cameras are disposed within a first retail establishment and are configured to capture one or more images of a patron within the first retail establishment. The POS terminals are also within the first retail establishment and one or more of the first POS terminals receives the one or more images and transmits a request over a network for enrollment of the patron in a loyalty program. The backend server receives the request, enrolls the patron in the loyalty program, and stores loyalty program data, where the backend server may recognize and provide the loyalty program data in response to subsequent requests for recognition of the patron from any one of a plurality of second POS terminals that are in other retail establishments that are related to the first retail establishment.